Station 41 — Thibodaux: QC report

ULM_Stn41 · CR1000X s/n 59192 · table FiveMin · file header program CPU:SO397545_Univ_of_LA_Measonet_Rev09282026.Stn41.wndcor.CR1X
2026-09-22 11:35 to 2026-10-04 05:15 logger clock · generated 2026-10-04 03:20

2,809unique 5-min records

28values flagged failure

16,628values flagged suspect

0dated corrections applied

Station-level findings

level	test	finding
suspect	soil_depth_duplicate	60 cm duplicates 50 cm on 4 days
suspect	soil_depth_duplicate	75 cm duplicates 60 cm on 4 days
suspect	soil_depth_duplicate	100 cm duplicates 75 cm on 4 days
info	solar_timing	overall solar timing offset -2 min over 1 clear days (positive = later than expected)
info	lsm_neighbors	LSM neighbors: 29 (64 km), 31 (80 km), 30 (82 km), 37 (88 km)
info	file_summary	2809 rows read, 2809 unique records, 2026-09-22 11:35:00 to 2026-10-04 05:15:00 (logger clock)
info	files_combined	record combined from 2 files: ULM_Stn41_FiveMin.dat.backup (2026-09-22 to 2026-09-28, SO397545 Univ of LA Measonet Rev09082026.Stn41.CR1X); ULM_Stn41_FiveMin.dat (2026-09-28 to 2026-10-04, SO397545_Univ_of_LA_Measonet_Rev09282026.Stn41.wndcor.CR1X)
info	record_reset	RECORD reset 1139 -> 0 (program load or table reset)
info	gap	569 missing records after 2026-09-22 11:40:00
info	gap	3 missing records after 2026-09-28 09:55:00
info	ch200_stale	2 records where the CH200 didn't answer: its other values (left over from the last good read) set to missing
info	startup_zeros	12 zero power readings in the first records after a program start were set to missing

Wind direction

By logger-program period (vs airports, after applied corrections)

Measured offset W = 223°. 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
2026-09-22 11:35 to 2026-09-28 09:55	1,140	–	–	–	-43°	-86°	not explained
2026-09-28 10:15 to 2026-10-04 05:05	1,667	–	–	–	-43°	-86°	not explained

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	12.73 V	12.83 V
Lowest battery reading	12.64 V
Charged in / used per day	4.8 / 2.5 Ah
Reached full charge (float)	8:30 am	8:20 am
Solar input, sunny-day peak	21.1 V	~21 V
Overnight draw	0.110 A
Charger temperature max	40 °C
Charger minus logger voltage	+0.09 V	wire drop
CH200 readings missing	0.0%

Flag counts by test

variable	test	level	records	% of record
AirTF_Avg	range	failure	2	0.07
RH_Avg	range	failure	2	0.07
SoilTmpF_100cm_Avg	range	failure	2	0.07
SoilTmpF_10cm_Avg	range	failure	2	0.07
SoilTmpF_20cm_Avg	range	failure	2	0.07
SoilTmpF_30cm_Avg	range	failure	2	0.07
SoilTmpF_40cm_Avg	range	failure	2	0.07
SoilTmpF_50cm_Avg	range	failure	2	0.07
SoilTmpF_5cm_Avg	range	failure	2	0.07
SoilTmpF_60cm_Avg	range	failure	2	0.07
SoilTmpF_75cm_Avg	range	failure	2	0.07
T109_10ft_F_Avg	range	failure	2	0.07
T109_30ft_F_Avg	range	failure	2	0.07
AbsBaro_inHg_Avg	range	failure	1	0.04
SeaLvlBaro_inHg_Avg	range	failure	1	0.04
VWC_100cm_Avg	range	suspect	1668	59.38
VWC_75cm_Avg	range	suspect	1668	59.38
BulkEC_100cm_Avg	soil_depth_duplicate	suspect	1018	36.24
BulkEC_60cm_Avg	soil_depth_duplicate	suspect	1018	36.24
BulkEC_75cm_Avg	soil_depth_duplicate	suspect	1018	36.24
Ka_100cm_Avg	soil_depth_duplicate	suspect	1018	36.24
Ka_60cm_Avg	soil_depth_duplicate	suspect	1018	36.24
Ka_75cm_Avg	soil_depth_duplicate	suspect	1018	36.24
SoilTmpF_100cm_Avg	soil_depth_duplicate	suspect	1018	36.24
SoilTmpF_60cm_Avg	soil_depth_duplicate	suspect	1018	36.24
SoilTmpF_75cm_Avg	soil_depth_duplicate	suspect	1018	36.24
VWC_100cm_Avg	soil_depth_duplicate	suspect	1018	36.24
VWC_60cm_Avg	soil_depth_duplicate	suspect	1018	36.24
VWC_75cm_Avg	soil_depth_duplicate	suspect	1018	36.24
WindDir_10ft_D1_WVT	direction_vs_other_sensors	suspect	288	10.25
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	suspect	288	10.25
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	suspect	288	10.25
T109_30ft_F_Avg	temperature_triad	suspect	210	7.48
T109_10ft_F_Avg	temperature_triad	suspect	3	0.11
AirTF_Avg	temperature_triad	suspect	2	0.07

Largest failure events

start (local)	end (local)	n	variable	test	detail
2026-09-22 11:35	2026-09-22 11:40	2	AirTF_Avg	range	outside hard limits [-20, 120]
2026-09-24 11:10	2026-09-24 11:10	1	AbsBaro_inHg_Avg	range	outside hard limits [27.0, 31.5]
2026-09-28 10:15	2026-09-28 10:15	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.