SGP/SMOS/E1 - tower down for maintenance

The SMOS E1 tower was down for maintenance on 18 APR 96 between
1430 and 1530 GMT.  All wind, temperature, and humidity data 
taken during this period are either incorrect or questionable.  
The barometric pressure and rain data are OK.

All SMOS E1 wind, temp, and humidity data taken on 18 Apr 96
between 1430 and 1530 should be flagged as incorrect.

• Standard Deviation of Air Temperature(sd_temp)
• Wind Speed (vector averaged)(wspd_va)
• Environmental Temperature (hybrid-b grid)(temp)
• Wind Speed(wspd)
• Relative Humidity (hybrid-b grid)(rh)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Direction(wdir)
• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Time of Minimum Temperature(time_min_temp)
• Time of minimum vapor pressure(time_min_vap_pres)
• Daily minimum vapor pressure(min_vap_pres)
• Time of maximum relative humidity(time_max_rh)
• Maximum Temperature(max_temp)
• Minimum Relative Humidity(min_rh)
• Time of maximum vapor pressure(time_max_vap_pres)
• Time of maximum air temperature(time_max_temp)
• Maximum of Wind speed(max_wspd)
• Daily maximum relative humidity(max_rh)
• Time of Maximum Wind Speed(time_max_wspd)
• Daily minimum air temperature(min_temp)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum of Wind speed(min_wspd)
• Time of Relative Humidity(time_min_rh)

• Wind Speed(wspd)
• Relative Humidity (hybrid-b grid)(rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Environmental Temperature (hybrid-b grid)(temp)
• Wind Speed (vector averaged)(wspd_va)
• Wind Direction(wdir)