SGP/TWR/C1 - Intermittent data loss or corruption due to maintenance

An aerosol instrument was mounted on the same sixty meter level carriage as the 
temperature/relative humidity system occupies, for the Spring IOP.  As a consequence of almost 
daily maintenance on the aerosol instrument, the carriage was lowered to ground level on a 
number of occasions, resulting in no temperature and relative humidity data during those 
maintenance periods. Most of the values in the one minute and 30 minute data are offscale 
if incorrect. Daily maximums and minimums may have been affected as well.  All data fields 
during the following time periods are considered to be incorrect:

Date  One Minute      Thirty Minute
4/12  23:25-23:59     2330
4/13  00:00-00:10     0000, 0030
4/15  18:20-23:59     1830, 1900, 1930, 2000, 2030, 2300, 2330
4/16  23:04-23:59     0000, 2330
4/17  00:00-00:09     0000, 0030, 2300, 2330
      22:59-23:59
4/18  00:00-00:13     0000, 0030, 2300, 2330
      22:57-23:59
4/19  00:00-00:07     0000, 0030, 2300, 2330
      22:54-23:56
4/20  22:49-23:55     0000, 2300, 2330
4/21  19:58-21:11     0000, 2000, 2030, 2100, 2130
4/22  18:44-20:18     1900, 1930, 2000, 2030
4/24  18:21-19:46     1830, 1900, 1930, 2000
4/26  17:58-18:47     1800, 1830, 1900
4/27  00:38-00:52     0100
4/28  17:49-21:32     1800, 1830, 1900, 1930, 2000, 2030, 2100, 2130, 2200
4/30  14:49-15:32     1500, 1530, 1600
5/1   15:40-16:34     1600, 1630, 1700, 2230, 2300
      22:13-22:41

Possible that daily maximums and minimums of temperature, relative humidity, and vapor 
pressure, as well as the times of those may be impacted by offscale data.

• Time of Minimum Temperature(time_min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Temperature, air, at 60-m height, 24-hr minimum(min_temp)
• Pressure, vapor, at 60-m height, 24-hr minimum(min_vap_pres)
• Pressure, vapor, at 60-m height, 24-hr maximum(max_vap_pres)
• Humidity, relative, at 60-m height, 24-hr minimum(min_rh)
• Time of Maximum Temperature(time_max_temp)
• Time of Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Temperature, air, at 60-m height, 24-hr maximum(max_temp)
• Humidity, relative, at 60-m height, 24-hr maximum(max_rh)

• Temperature, air(temp)
• Humidity, relative(rh)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)

• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• Temperature, air(temp)
• Humidity, relative(rh)
• sd_vap_pres
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)