Station 31 — Baton Rouge: QC report
ULM_Stn31 · CR1000X s/n 59185 · table FiveMin · file header program CPU:SO397545_Univ_of_LA_Measonet_Rev09282026.Stn31.wndcor.CR1X
2026-09-28 05:55 to 2026-10-05 05:50 logger clock · generated 2026-10-05 03:50
2026-09-28 05:55 to 2026-10-05 05:50 logger clock · generated 2026-10-05 03:50
2,016unique 5-min records
305values flagged failure
1,847values flagged suspect
0dated corrections applied
Station-level findings
| level | test | finding |
|---|---|---|
| info | solar_timing | overall solar timing offset +12 min over 2 clear days (positive = later than expected) |
| info | lsm_neighbors | LSM neighbors: 36 (29 km), 19 (49 km), 28 (57 km), 37 (69 km) |
| info | file_summary | 5014 rows read (last 7 days), 2016 unique records, 2026-09-28 05:55:00 to 2026-10-05 05:50:00 (logger clock) |
| info | files_combined | record combined from 2 files: ULM_Stn31_FiveMin.dat.backup (2026-09-17 to 2026-09-28, SO397545 Univ of LA Measonet Rev03052026.Stn31.wndcor.CR1X); ULM_Stn31_FiveMin.dat (2026-09-28 to 2026-10-05, SO397545_Univ_of_LA_Measonet_Rev09282026.Stn31.wndcor.CR1X) |
| info | record_reset | RECORD reset 40317 -> 0 (program load or table reset) |
Wind direction
By logger-program period (vs airports, after applied corrections)
Measured offset W = 291°. Predicted 30-ft rotation with no correction code = 180 − W; with the sign-flipped line = 360 − 2W.
| period (logger clock) | records | 30-ft | sonic | 10-ft | if no code | if sign-flipped | best explanation |
|---|---|---|---|---|---|---|---|
| 2026-09-28 09:50 to 2026-10-05 05:45 | 1,968 | +25° | +12° | – | -111° | +138° | not explained |
Proposed corrections (not applied; copy into stations.yaml to use):
| sensor | start | end | add | apply | reason |
|---|---|---|---|---|---|
| 30ft | 2026-09-28 09:50 | 2026-10-05 05:45 | -25 | False | empirical (median vs reference); observed +25 deg (airports) |
Flags by variable and month
Comparison with nearby LSM stations
Temperature sensor agreement
Wind speed ratios and solar timing
Power: battery, solar charging and load
| Last 7 days | this station | network / expected |
|---|---|---|
| Overnight battery minimum | 12.82 V | 12.84 V |
| Lowest battery reading | 12.80 V | |
| Charged in / used per day | 4.4 / 2.7 Ah | |
| Reached full charge (float) | 10:45 am | 8:20 am |
| Solar input, sunny-day peak | 20.6 V | ~21 V |
| Overnight draw | 0.118 A | |
| Charger temperature max | 41 °C | |
| Charger minus logger voltage | +0.08 V | wire drop |
| CH200 readings missing | 0.0% |
Flag counts by test
| variable | test | level | records | % of record |
|---|---|---|---|---|
| RV_Pre_Accu_Tot | sensor_missing | failure | 2016 | 100.00 |
| WindDir_30ft_D1_WVT | direction_vs_neighbors | failure | 288 | 14.29 |
| WindDir_30ft_D1_WVT | stuck_direction | failure | 4 | 0.20 |
| WindDir_30ft_SD1_WVT | stuck_direction | failure | 4 | 0.20 |
| SoilTmpF_100cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_10cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_20cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_30cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_40cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_50cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_5cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_60cm_Avg | range | failure | 1 | 0.05 |
| SoilTmpF_75cm_Avg | range | failure | 1 | 0.05 |
| BattV_Avg | late_full_charge | suspect | 864 | 42.86 |
| WindDir_30ft_D1_WVT | direction_vs_lsm_neighbors | suspect | 576 | 28.57 |
| WindDir_30ft_D1_WVT | direction_vs_neighbors | suspect | 576 | 28.57 |
| T109_10ft_F_Avg | temperature_triad | suspect | 293 | 14.53 |
| WindDir_30ft_D1_WVT | direction_vs_other_sensors | suspect | 288 | 14.29 |
| T109_30ft_F_Avg | temperature_triad | suspect | 113 | 5.61 |
| SlrW_Avg | solar_above_clearsky | suspect | 1 | 0.05 |
Largest failure events
| start (local) | end (local) | n | variable | test | detail |
|---|---|---|---|---|---|
| 2026-09-28 05:55 | 2026-10-05 05:50 | 2016 | RV_Pre_Accu_Tot | sensor_missing | rain gauge (RainVUE): no readings (100% of a 24-h window blank) while the station is reporting: cable, connector, SDI-12 address/port, or sensor |
| 2026-10-04 00:00 | 2026-10-04 23:55 | 288 | WindDir_30ft_D1_WVT | direction_vs_neighbors | daily direction differs from neighbor stations by > 60 deg |
| 2026-09-28 08:30 | 2026-09-28 08:45 | 4 | WindDir_30ft_D1_WVT | stuck_direction | direction SD = 0 with wind >= 3.0 mph |
| 2026-09-28 09:50 | 2026-09-28 09:50 | 1 | SoilTmpF_100cm_Avg | range | outside hard limits [10, 125] |
Corrections
Applied (from stations.yaml):
None.
Documented but not applied (apply: false):
None.
How to read this
Levels: 0 good, 1 suspect, 2 failure, 9 missing. Each variable's level is in QC_<variable> in the data file; the events file lists every flagged run with the test that set it. Station-level findings summarize patterns (sensor rotation, clock offsets, duplicate soil depths) that per-record flags can't describe on their own. Wind direction flags use daily vector means, so a flagged day marks every record in that day.