NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry

The output precision of the following variables was increased 20060929:

   alt	changed from 1m to 0.1m
   dp	changed from 0.1degC to 0.01degC
   pres changed from 0.1 hPa to 0.01 hPa
   RH	changed from 1%RH to 0.01%RH
   tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase
in accuracy.  Users are cautioned to continue to use their best scientific
judgement when using these or any other data.

• Relative humidity inside the instrument enclosure(rh)
• Dry bulb temperature(tdry)
• Dummy altitude for Zeb(alt)
• Retrieved pressure profile(pres)
• Surface dew point temperature(dp)

NSA/MET/C1 - PWS data missing due to snow impaction

Blizzard conditions caused the optics to become impacted with snow and ice rendering the 
Present Weather Detector inoperative.

• pws_pw_code_1hr
• qc_pws_err_code
• qc_pws_pw_code_1hr
• pws_precip_rate_mean_1min
• pws_vis_mean_1min
• pws_pw_code_15min
• pws_err_code
• pws_pw_code_inst
• qc_pws_pw_code_inst
• pws_cumul_rain
• qc_pws_cumul_rain
• qc_pws_vis_mean_10min
• qc_pws_cumul_snow
• qc_pws_vis_mean_1min
• pws_cumul_snow
• pws_vis_mean_10min
• qc_pws_precip_rate_mean_1min
• qc_pws_pw_code_15min

NSA/MET/C1 - CMH data missing

The data from the CMH was missing during these times due to a failing logic board.  The 
board was replaced.

• qc_cmh_dew_point
• qc_cmh_temp
• qc_cmh_sat_vapor_pressure
• qc_cmh_rh
• cmh_vapor_pressure
• cmh_sat_vapor_pressure
• cmh_temp
• cmh_rh
• qc_cmh_vapor_pressure
• cmh_dew_point