HFE/ECOR/M1 - Sonic failure

The sonic datastream were "garbled", possibly associated with a serial line damage to the 
LI-7500 serial port or the Versalogic SBC serial port. Garbled data condition existed 
through 10/09/08 0030 GMT followed by missing data through 10/12/08 0230 GMT.

• covariance of qc(cvar_qc)
• mean value of \spike\ v samples(mean_spk_v)
• skewness of variable t(skew_t)
• Water vapor density (q)(mean_q)
• rotated covariance wc(cvar_rot_wc)
• skewness of variable u(skew_u)
• mean value of \spike\ w samples(mean_spk_w)
• variance of w(var_rot_w)
• rotated mean v(mean_rot_v)
• number of t samples removed due to spikes(n_spk_t)
• covariance of tq(cvar_tq)
• number of valid u samples(n_good_u)
• 0=real or 1=dummy value of cp(real_cp)
• mean horizontal wind speed(mean_rot_u)
• number of u samples removed due to spikes(n_spk_u)
• kurtosis of variable c(kurt_c)
• variance of u(var_rot_u)
• number of samples with bad sonic status flag(n_bad_son_ic)
• rotated covariance vw(cvar_rot_vw)
• number of valid t samples(n_good_t)
• condensation pressure(cp)
• Dummy altitude for Zeb(alt)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• base time(base_time)
• rotated covariance uw(cvar_rot_uw)
• covariance of tc(cvar_tc)
• 0=real or 1=dummy value of mr(real_mr)
• standard deviation of wind direction(std_wind_dir)
• number of bad or out of range q samples(n_bad_q)
• covariance ut(cvar_ut)
• wT covariance(cvar_wt)
• rotated covariance uq(cvar_rot_uq)
• momentum flux (dynamic)(k)
• number of bad or out of range c samples(n_bad_c)
• latent heat of vaporization(lv)
• covariance vt(cvar_vt)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• variance of variable u(var_u)
• CO2 flux(fc)
• h(h)
• standard deviation of wind elevation angle(std_elev)
• lon(lon)
• covariance uv(cvar_uv)
• kurtosis of variable q(kurt_q)
• skewness of variable c(skew_c)
• latent heat flux(lv_e)
• variance of c(var_c)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• variance of t(var_t)
• covariance wq(cvar_wq)
• Vertical angle of wind(phi)
• rotated covariance uc(cvar_rot_uc)
• skewness of variable w(skew_w)
• number of q samples removed due to spikes(n_spk_q)
• kurtosis of variable u(kurt_u)
• Virtual temperature (T)(mean_t)
• number of bad or out of range w samples(n_bad_w)
• kurtosis of variable t(kurt_t)
• number of valid c samples(n_good_c)
• number of bad or out of range t samples(n_bad_t)
• number of valid w samples(n_good_w)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• skewness of variable v(skew_v)
• number of w samples removed due to spikes(n_spk_w)
• Friction velocity(ustar)
• number of bad or out of range u samples(n_bad_u)
• kurtosis of variable v(kurt_v)
• mixing ratio(mr)
• number of bad or out of range v samples(n_bad_v)
• lat(lat)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• covariance vc(cvar_vc)
• number of v samples removed due to spikes(n_spk_v)
• Down-boom wind velocity (u)(mean_u)
• rotated covariance vc(cvar_rot_vc)
• covariance vq(cvar_vq)
• uw covariance(cvar_uw)
• kurtosis of variable w(kurt_w)
• vector averaged wind speed(wind_spd)
• Cross-boom wind velocity (v)(mean_v)
• Vertical wind velocity (w)(mean_w)
• vector averaged wind direction(wind_dir)
• rotated covariance ut(cvar_rot_ut)
• variance of variable w(var_w)
• covariance uq(cvar_uq)
• Retrieved water vapor density profile(rho)
• variance of v(var_rot_v)
• number of valid v samples(n_good_v)
• covariance wc(cvar_wc)
• variance of variable v(var_v)
• number of valid q samples(n_good_q)
• 0=real or 1=dummy value of rho(real_rho)
• number of c samples removed due to spikes(n_spk_c)
• mean co2 concentration (c)(mean_c)
• average temperature (IGRA internal sensor)(temp_irga)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• vertical (elevation) wind angle(elev)
• rotated mean w(mean_rot_w)
• time(time)
• average voltage of IRGA cooler(mean_cooler)
• covariance uc(cvar_uc)
• vw covariance(cvar_vw)
• mean value of \spike\ u samples(mean_spk_u)
• variance of q(var_q)
• rotated covariance uv(cvar_rot_uv)
• skewness of variable q(skew_q)
• 0=real or 1=dummy value of lv(real_lv)
• rotated covariance vt(cvar_rot_vt)
• rotated covariance vq(cvar_rot_vq)
• Time offset of tweaks from base_time(time_offset)

HFE/MET/M1 -  Wind Speed data contain offset due to induced voltage

The marine model of the RM Young wind sensor needs twisted pair shielded cable.  The 
manufacturer did not originally supply the pigtail with twisted pair shielded cable.  Use of 
twisted pair shielded cable for the rest of the cable run to the logger was also not 
specified.  This caused an induced voltage in the wind speed line from the wind direction 
excitation.  The induced voltage varied from sensor to sensor and probably changed anytime 
the cable was replaced or parts of the wind sensor were repaired or replaced. The induced 
voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s.

• Wind speed arithmetic average(wind_spd_arith_avg)
• Wind speed arithmetic maximum(wind_spd_arith_max)
• Wind speed arithmetic minimum(wind_spd_arith_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Wind speed arithmetic standard deviation(wind_spd_arith_sd)

HFE/MET/M1 - Intermittent barometer failure

Intermittent barometer failure occurred throughout the deployment.  We were unable to 
pinpoint the cause of the failure.  Typically one or two minutes of missing data occurred 
every few days.

Since pressure data is typically invariant over 1 minute, linear interpolation should be 
fine to fill in missing data.

• Barometric Pressure(atmos_pressure)

HFE/MET/M1 - Intermittent PWD data

The Present Weather Detector had intermittent missing values throughout this deployment.  
Missing values occurred almost everyday, usually just one or two minutes per day.

• 1 minute average water intensity(pwd_avg_H2O_int_1_min)
• 15 min present weather code(pwd_pw_code_15_min)
• Average 10 min visibility(pwd_avg_vis_10_min)
• Average 1 min visibility(pwd_avg_vis_1_min)
• 1 hour present weather code(pwd_pw_code_1_hr)
• Instantaneous present weather code(pwd_pw_code_inst)
• Cumulative water(pwd_cumul_water)
• Present weather detector error code(pwd_err_code)
• Present weather detector ID(pwd_id)
• Cumulative snow(pwd_cumul_snow)

HFE/MET/M1 - ORG Measuring Ice Crystals or Fog

The ORG was measuring consistent values for long periods of time.  Typically this is 
indicative of fog, ice crystals in the air or poor performance of the lens heaters.

• Precipitation rate standard deviation(precip_rate_sd)
• Precipitation rate minimum(precip_rate_min)
• Precipitation rate mean(precip_rate_mean)
• Precipitation rate maximum(precip_rate_max)

HFE/MET/M1 - Induced voltage on wind speed sensor cable

The cable for the wind monitor is not a twisted pair shielded cable.  This caused an 
induced voltage on the wind sensor wires from the wind direction measurement excitation 
voltage.  A small offset is added into the wind speeds.  This value varies.  Most frequently 
the values of 0.49, 0.588 and 0.686 m/s were added into the wind speed.  On 11/27/2008 the 
value jumped to 0.98 m/s for most of the day.

• Wind speed arithmetic average(wind_spd_arith_avg)
• Wind speed arithmetic maximum(wind_spd_arith_max)
• Wind speed arithmetic minimum(wind_spd_arith_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Wind speed arithmetic standard deviation(wind_spd_arith_sd)

HFE/MFRSR/M1 - Shading problem

It looks like there could be a shading problem beginning on 20080826 that lasts until 
20081013.  Affected data range from sunrise until about 0400 UTC.

• Nominal calibration factor, applied to filter6 data(nominal_calibration_factor_filter6)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1)
• cosine correction, south to north, filter5(cosine_correction_sn_filter5)
• Ratio of direct_normal_narrowband_filter3 to diffuse_hemisp_narrowband_filter3(direct_diffuse_ratio_filter3)
• Ratio of direct_normal_narrowband_filter4 to diffuse_hemisp_narrowband_filter4(direct_diffuse_ratio_filter4)
• Ratio of direct_normal_broadband to diffuse_hemisp_broadband(direct_diffuse_ratio_broadband)
• cosine correction, west to east, filter6(cosine_correction_we_filter6)
• Logger panel temperature(logger_temp)
• Normalized filter function data, filter 6, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter6)
• Cosine correction applied to direct_horizontal_narrowband_filter3(computed_cosine_correction_filter3)
• time(time)
• Nominal calibration factor, applied to filter5 data(nominal_calibration_factor_filter5)
• Ratio of direct_normal_narrowband_filter2 to diffuse_hemisp_narrowband_filter2(direct_diffuse_ratio_filter2)
• lat(lat)
• Ratio of direct_normal_narrowband_filter5 to diffuse_hemisp_narrowband_filter5(direct_diffuse_ratio_filter5)
• cosine correction, south to north, filter1(cosine_correction_sn_filter1)
• Normalized filter function data, filter 3, wavelength value obtained during
  bench calibrations(wavelength_filter3)
• Cosine correction applied to direct_horizontal_narrowband_filter5(computed_cosine_correction_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Normalized filter function data, filter 5, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter5)
• Cosine correction applied to direct_horizontal_narrowband_filter2(computed_cosine_correction_filter2)
• Normalized filter function data, filter 6, wavelength value obtained during
  bench calibrations(wavelength_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Normalized filter function data, filter 5, wavelength value obtained during
  bench calibrations(wavelength_filter5)
• base time(base_time)
• cosine correction, south to north, filter3(cosine_correction_sn_filter3)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Normalized filter function data, filter 4, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter4)
• lon(lon)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• cosine correction, west to east, filter3(cosine_correction_we_filter3)
• Nominal calibration factor, applied to broadband data(nominal_calibration_factor_broadband)
• Normalized filter function data, filter 1, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter1)
• Normalized filter function data, filter 1, wavelength value obtained during
  bench calibrations(wavelength_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Cosine correction of filter6 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Solar zenith angle(solar_zenith_angle)
• Normalized filter function data, filter 3, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• cosine correction, west to east, filter4(cosine_correction_we_filter4)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• cosine correction, west to east, filter2(cosine_correction_we_filter2)
• Cosine correction of broadband diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_broadband)
• cosine correction, south to north, filter6(cosine_correction_sn_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Normalized filter function data, filter 4, wavelength value obtained during
  bench calibrations(wavelength_filter4)
• Ratio of direct_normal_narrowband_filter6 to diffuse_hemisp_narrowband_filter6(direct_diffuse_ratio_filter6)
• Normalized filter function data, filter 2, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter2)
• cosine correction, south to north, broadband channel(cosine_correction_sn_broadband)
• Normalized filter function data, filter 2, wavelength value obtained during
  bench calibrations(wavelength_filter2)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Cosine correction applied to direct_horizontal_narrowband_filter6(computed_cosine_correction_filter6)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Detector Temperature(head_temp)
• Cosine correction applied to direct_horizontal_narrowband_filter1(computed_cosine_correction_filter1)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Second Detector Temperature(head_temp2)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Air mass(airmass)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Cosine correction of filter2 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter2)
• cosine correction, west to east, broadband channel(cosine_correction_we_broadband)
• Nominal calibration factor, applied to filter2 data(nominal_calibration_factor_filter2)
• Nominal calibration factor, applied to filter1 data(nominal_calibration_factor_filter1)
• Hemispheric Irradiance, MFRSR(hemisp_broadband)
• Cosine correction of filter5 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter5)
• cosine correction, west to east, filter1(cosine_correction_we_filter1)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• Elevation Angle(elevation_angle)
• Azimuth angle(azimuth_angle)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• cosine correction, south to north, filter2(cosine_correction_sn_filter2)
• Cosine correction applied to direct_horizontal_narrowband_filter4(computed_cosine_correction_filter4)
• cosine correction, west to east, filter5(cosine_correction_we_filter5)
• Cosine correction applied to direct_horizontal_broadband(computed_cosine_correction_broadband)
• Cosine correction of filter3 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter3)
• Ratio of direct_normal_narrowband_filter1 to diffuse_hemisp_narrowband_filter1(direct_diffuse_ratio_filter1)
• Nominal calibration factor, applied to filter3 data(nominal_calibration_factor_filter3)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Cosine correction of filter1 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter1)
• angle of incidence during cosine bench measurements(bench_angle)
• Time offset of tweaks from base_time(time_offset)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5)
• Cosine correction of filter4 diffuse, assuming Rayleigh sky at 45 deg zenith
  angle(diffuse_correction_filter4)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Data Logger Supply Voltage(logger_volt)
• Dummy altitude for Zeb(alt)
• Nominal calibration factor, applied to filter4 data(nominal_calibration_factor_filter4)
• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4)
• cosine correction, south to north, filter4(cosine_correction_sn_filter4)

• Logger panel temperature(logger_temp)
• Diffuse Narrowband Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5_raw)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Diffuse Narrowband Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2_raw)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2)
• Diffuse Narrowband Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4_raw)
• base time(base_time)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Detector Temperature(head_temp)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• Hemispheric Irradiance, MFRSR(hemisp_broadband)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4_raw)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Narrowband Hemispheric Irradiance, Filter 2(hemisp_narrowband_filter2_raw)
• Second Detector Temperature(head_temp2)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3_raw)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• lon(lon)
• Narrowband Hemispheric Irradiance, Filter 3(hemisp_narrowband_filter3)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• Diffuse Narrowband Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6_raw)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• time(time)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)
• Hemispheric Broadband Irradiance(hemisp_broadband_raw)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Dummy altitude for Zeb(alt)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Data Logger Supply Voltage(logger_volt)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6_raw)
• Diffuse Narrowband Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3_raw)
• Narrowband Hemispheric Irradiance, Filter 1(hemisp_narrowband_filter1_raw)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Narrowband Hemispheric Irradiance, Filter 4(hemisp_narrowband_filter4)
• Diffuse Narrowband Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1_raw)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Time offset of tweaks from base_time(time_offset)
• Diffuse Hemispheric Broadband Irradiance(diffuse_hemisp_broadband_raw)
• lat(lat)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Narrowband Hemispheric Irradiance, Filter 5(hemisp_narrowband_filter5_raw)

• null(Raw data stream - documentation not supported)

HFE/NFOV/M1 - Over-ranging data

The instrument was incorrectly installed with an incorrect range setting in the logger 
program.  The program for lamp calibrating the instrument was used, and not the operational 
program. The scale ranges are different, and this resulted in over-ranging conditions 
when the signal exceeded the upper end of the measurement scale.  Affected times are 
centered around solar noon, nominally +/- one-hour around solar noon.  This lasted until 
mid-Aug, when the highest signals were no longer exceeding the logger range.

• Raw counts from instrument before calibration, 870 nm(raw_counts_870nm)
• Calibrated Zenith Radiance, 870 nm(radiance_870nm)
• Raw counts from instrument before calibration, 673 nm(raw_counts_673nm)
• Calibrated Zenith Radiance, 673 nm(radiance_673nm)