SGP/EBBR/E13 - Battery voltage drop

On Friday 2 November, 1995 the instrument heaters were switched on.  By
4 November, the solar panel was not able to maintain the battery voltage for
the cold night conditions that existed.  On Monday, 5 November the heaters
were turned off, but the poor condition of the battery did not allow it,
once partially drained, to recharge sufficiently for nighttime conditions.
On 8 November, at 2106 GMT, the battery was replaced (resulting in missing
data for 2030-2130 GMT).  Most of the data for the period above is incorrect,
especially data from the sensors that require at least 11 volts DC power.
The data that is incorrect is listed below.

5 minute:   tref, tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
            vp_top, vp_bot, q, pres, home

15 minute:  rr_thum_r, rr_thum_l, rr_ts1, rr_ts2, rr_ts3, rr_ts4, rr_ts5,
            rr_tref, mv_hum_r, mv_hum_l, mv_pres, mv_home, mv_q, mv_hft1,
            mv_hft2, mv_hft3, mv_hft4, mv_hft5, tair_r, tair_l

30 minute:  tair_top, tair_bot, tref, thum_top, thum_bot, hum_top, hum_bot,
            vp_top, vp_bot, pres, home_15, home_30, bowen, e, h, shf, shf1,
            shf2, shf3, shf4, shf5, c_shf1, c_shf2, c_shf3, c_shf4, c_shf5,
            ts1, ts2, ts3, ts4, ts5, q, g1, g2, g3, g4, g5, ces1, ces2,
            ces3, ces4, ces5

Periods of time affected (these are the 30 minute periods that are
incorrect - incorrect 5 and 15 minute data may also occur for all or part
of the previous half hour):

4 Nov 95: 1200-1400 GMT
5 Nov 95: 0330-1430 GMT
6 Nov 95: 0000-1530 GMT
7 Nov 95: 0000-1400 GMT
8 Nov 95: 0000-1400 GMT

• home_signal
• soil_heat_flow_4_mv
• temp_air_right
• temp_air_left
• soil_heat_flow_1_mv
• soil_temp_3_rr
• temp_trh_right_rr
• soil_heat_flow_3_mv
• temp_reference_rr
• soil_temp_2_rr
• net_radiation_mv
• soil_heat_flow_2_mv
• soil_temp_1_rr
• soil_temp_5_rr
• temp_trh_left_rr
• soil_heat_flow_5_mv
• rh_left_mv
• rh_right_mv
• soil_temp_4_rr

• temp_air_bottom
• rh_top_fraction
• net_radiation
• temp_trh_top
• temp_reference
• vapor_pressure_top
• vapor_pressure_bottom
• atmos_pressure
• temp_air_top
• temp_trh_bottom
• home_signal
• rh_bottom_fraction

• bowen_ratio
• temp_trh_top
• home_signal_15
• sensible_heat_flux
• energy_storage_change_3
• rh_top_fraction
• energy_storage_change_2
• energy_storage_change_1
• temp_air_bottom
• surface_soil_heat_flux_5
• temp_reference
• corr_soil_heat_flow_1
• temp_air_top
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5
• energy_storage_change_5
• energy_storage_change_4
• net_radiation
• home_signal_30
• rh_bottom_fraction
• soil_heat_flow_2
• soil_heat_flow_3
• soil_heat_flow_4
• soil_heat_flow_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• soil_heat_flow_1
• soil_temp_5
• soil_temp_4
• soil_temp_3
• soil_temp_2
• latent_heat_flux
• soil_temp_1
• vapor_pressure_bottom
• temp_trh_bottom
• vapor_pressure_top