TMP/ASSIST/M1 - Out of order time values in raw data files

Due to hardware/software conflicts, the ASSIST was receiving time synchronization from 
multiple sources. This would occasionally result in conflicts and time stamps within data 
files sometimes going backwards in time.  The data processing cannot handle this so 
offending records are discarded/ignored resulting in occasional data loss.

null

• base time in epoch(base_time)
• FTS 15 volt supply(fts_15v)
• Time offset from the first sensor detected per cycle.(fts_15v_time_lag)
• Time offset from the first sensor detected per cycle.(mirror_motor_temp_time_lag)
• Time offset from the first sensor detected per cycle.(itx_pc_12v_time_lag)
• Time offset from the first sensor detected per cycle.(itx_cpu_heatsink_temp_time_lag)
• Front end enclosure temperature(front_end_enclosure_temp)
• External RH(external_rh)
• Electronics box temperature(elec_box_temp)
• Time offset from the first sensor detected per cycle.(bb_cooler_24v_time_lag)
• Time offset from the first sensor detected per cycle.(elec_box_temp_time_lag)
• Scene mirror motor temperature(mirror_motor_temp)
• Time offset from the first sensor detected per cycle.(preamp_15v_time_lag)
• Time offset from the first sensor detected per cycle.(external_rh_time_lag)
• Time offset from the first sensor detected per cycle.(power_supply_box_temp_time_lag)
• Time offset from the first sensor detected per cycle.(front_end_enclosure_temp_time_lag)
• Time offset from the first sensor detected per cycle.(annotator_5v_time_lag)
• Time offset from the first sensor detected per cycle.(mirror_motor_24v_time_lag)
• FTS enclosure temperature(fts_enclosure_temp)
• lon(lon)
• BBY and det. cooler 24 v supply(bb_cooler_24v)
• Time offset from base_time(time_offset)
• time_in_seconds_since_volume_start(time)
• Pre-amp 15 v supply(preamp_15v)
• Time offset from the first sensor detected per cycle.(fts_enclosure_temp_time_lag)
• Annotator 5 v supply(annotator_5v)
• North Latitude(lat)
• Itx CPU heatsink temperature(itx_cpu_heatsink_temp)
• Time offset from the first sensor detected per cycle.(cooler_block_temp_time_lag)
• ITX PC 12 v supply(itx_pc_12v)
• -180.0 - +180.0(alt)
• Cooler block temperature(cooler_block_temp)
• Power supply box temperature(power_supply_box_temp)
• Motor 24 v supply(mirror_motor_24v)

• Hatch operating mode(hatch_control_mode)
• Index location of channel 1 interferogram maxima(ch1_igm_max_index)
• Mirror angle for selected scene(scene_angle)
• Ch2 interferogram peak to peak amplitude(ch2_igm_peak_to_peak)
• AC voltage supplied to compressor(compressor_ac_v_applied)
• Sunlight intensity with arbitrary scale(sun_sensor_signal)
• Ambient blackbody temperature at bottom of cone(abb_thermistor_2)
• Ambient blackbody temperature at top of cone(abb_thermistor_1)
• Ambient air temperature near cooler(temp_near_cooler)
• Ambient blackbody temperature at apex of cavity(abb_thermistor_3)
• Number of scans since last power cycle(scan_number)
• Index location of ch2 interferogram minima(ch2_igm_min_index)
• Longitude from GPS(gps_longitude)
• Monitor voltage for cooler controller(cooler_monitor_v)
• Intended scene for mirror position(scene_id)
• Ambient blackbody temperature setting(abb_set_point)
• Hatch closed when 1(hatch_closed_indicator)
• Hatch open when 1(hatch_open_indicator)
• Number of satellites in GPS fix(gps_number_satellites)
• Cooler temperature diode reading(cooler_diode_reading)
• Number of times cooler has been powered up since installation.(cooler_pwr_cycles)
• Cooler temperature(cooler_diode_temperature)
• Index location of ch3 interferogram minima(ch3_igm_min_index)
• Ch3.2 interferogram peak to peak amplitude(ch3_igm_peak_to_peak)
• North Latitude(lat)
• Index location of channel 2 interferogram maxima(ch2_igm_max_index)
• Ch1 interferogram peak to peak amplitude(ch1_igm_peak_to_peak)
• Hot blackbody temperature setting(hbb_set_point)
• Altitude above mean sea level from GPS(gps_altitude)
• Time from GPS in UTC stored as HHMMSS(gps_time_hhmmss_utc)
• Compressor current draw(compressor_current_draw)
• base time in epoch(base_time)
• Index location of channel 1 interferogram minima(ch1_igm_min_index)
• -180.0 - +180.0(alt)
• Hot blackbody temperature at bottom of cone(hbb_thermistor_2)
• Hot blackbody temperature at apex of cavity(hbb_thermistor_3)
• Hot blackbody temperature at top of cone(hbb_thermistor_1)
• Mean hot blackbody temp from three thermistors(hbb_mean_temp)
• Mean ambient blackbody temperature from three thermistors(abb_mean_temp)
• lon(lon)
• Direction of scan(scan_direction)
• Cooler temperature alarm state(cooler_temp_alarm)
• Precip sensor state(precip_sensor_state)
• Latitude from GPS(gps_latitude)
• Time offset from base_time(time_offset)
• DC supply voltage for cooler(cooler_24v_dc_power_supply)
• Index location of ch3 interferogram maxima(ch3_igm_max_index)
• time_in_seconds_since_volume_start(time)

• wavenumbers for mean radiance spectra(wnum)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• Time offset from base_time(time_offset)
• base time in epoch(base_time)
• time_in_seconds_since_volume_start(time)
• Mean of radiance spectra ensemble(mean_rad)
• lon(lon)

• Ch 2 responsivity, real component(ch2_resp_re)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(ch2_window_radiance_std)
• Scene NESR ch 2(ch2_sky_nen)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(ch2_surface_layer_radiance_std)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(ch1_window_radiance_std)
• Radiance standard deviation during sky view averaged over (700_705 cm^-1)(ch1_elevated_layer_radiance_std)
• lon(lon)
• Ch 1 responsivity, imaginary component(ch1_resp_im)
• Longwave radiance average (700_705 cm^-1) elevated air(ch1_elevated_layer_radiance)
• HBB 2min NESR estimate #2 derived from sequential HBB views (ch2)(ch2_hbb_nen2)
• HBB 2min NESR estimate #1 derived from variance during HBB view (ch2)(ch2_hbb_nen1)
• Ch 1 responsivity, real component(ch1_resp_re)
• Longwave window radiance average (985_990 cm^-1)(ch1_window_radiance)
• Time offset from base_time(time_offset)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm^-1)(ch1_elevated_layer_bt)
• Ch 2 calibration offset, imaginary component(ch2_offset_im)
• base time in epoch(base_time)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(ch1_window_bt)
• Shortwave hot blackbody noise-equivalent radiance(ch2_hbb_nen_2500wn)
• Sky brightness temp ch1(ch1_sky_temp)
• time_in_seconds_since_volume_start(time)
• Ch 2 calibration offset, real component(ch2_offset_re)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm^-1)(ch2_surface_layer_bt)
• Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(ch2_elevated_layer_radiance_std)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(ch2_sky_nen_2500wn)
• Ch 2 responsivity, imaginary component(ch2_resp_im)
• Ch 1 calibration offset, real component(ch1_offset_re)
• Characteristic value representing overall shortwave channel responsivity(ch1_responsivity_1000wn)
• Variance of sky radiance ch 1(ch1_sky_variance)
• -180.0 - +180.0(alt)
• Shortwave radiance average (2295_2300 cm^-1) surface air(ch2_surface_layer_radiance)
• Radiance standard deviation during sky view averaged over (675_680 cm^-1)(ch1_surface_layer_radiance_std)
• Shortwave window radiance average (2510_2515 cm^-1)(ch2_window_radiance)
• Characteristic value representing overall longwave channel responsivity(ch2_responsivity_2500wn)
• Longwave radiance average (675-680 cm^-1) surface air(ch1_surface_layer_radiance)
• Ch 1 calibration offset, imaginary component(ch1_offset_im)
• Longwave surface air brightness temperature from radiance average (675_680
  cm^-1)(ch1_surface_layer_bt)
• ASSIST longwave scene radiance spectral averages (ch1)(ch1_mean_radiance)
• Variance of sky radiance ch 2(ch2_sky_variance)
• Scene NESR ch 1(ch1_sky_nen)
• Sky brightness temp ch2(ch2_sky_temp)
• ASSIST shortwave scene radiance spectral averages (ch2)(ch2_mean_radiance)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm^-1)(ch2_elevated_layer_bt)
• North Latitude(lat)
• Shortwave radiance average (2282_2287 cm^-1) elevated air(ch2_elevated_layer_radiance)
• HBB 2 min NESR estimate #1 derived from variance during HBB view (ch1)(ch1_hbb_nen1)
• HBB 2min NESR estimate #2 derived from sequential HBB views (ch1)(ch1_hbb_nen2)
• Brightness temperature computed over irt band with IRT responsivity.(ch1_irt_band_brightness_temp)
• Wave number in reciprocal centimeters(wnum2)
• Wave number for channel 1 in reciprocal centimeters(wnum1)
• Longwave hot blackbody noise-equivalent radiance(ch1_hbb_nen_1000wn)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm^-1(ch1_sky_nen_1000wn)
• Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(ch2_window_bt)

• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• base time in epoch(base_time)
• Time offset from base_time(time_offset)
• lon(lon)
• time_in_seconds_since_volume_start(time)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Mean of radiance spectra ensemble(mean_rad)
• wavenumbers for mean radiance spectra(wnum)