Station 34 — Cheneyville: QC report

ULM_Stn34 · CR1000X s/n 59190 · table FiveMin · file header program CPU:SO397545_Univ_of_LA_Measonet_Rev09282026.Stn34.wndcor.CR1X
2026-05-08 11:30 to 2026-10-04 05:15 logger clock · generated 2026-10-04 03:20

41,699unique 5-min records

605values flagged failure

505,111values flagged suspect

0dated corrections applied

Station-level findings

level	test	finding
suspect	direction_vs_other_sensors	30ft-10ft: median daily difference -26 deg over 36 days
suspect	direction_vs_other_sensors	10ft-sonic: median daily difference +27 deg over 36 days
suspect	neighbor_direction	30ft: median offset vs ESF, AEX, OPL = -24 deg (IQR -31 to -19, 49 days)
suspect	neighbor_direction	sonic: median offset vs ESF, AEX, OPL = -26 deg (IQR -32 to -20, 51 days)
suspect	soil_depth_duplicate	40 cm duplicates 30 cm on 1 days
suspect	soil_depth_duplicate	50 cm duplicates 40 cm on 1 days
suspect	soil_depth_duplicate	60 cm duplicates 50 cm on 140 days
suspect	soil_depth_duplicate	75 cm duplicates 60 cm on 140 days
suspect	soil_depth_duplicate	100 cm duplicates 75 cm on 140 days
suspect	vs_lsm_neighbors	rain total 38.5 in vs LSM neighbor median 17.1 in over shared days (ratio 2.25); missed-rain days 0, rain-only-here days 0
suspect	direction_vs_lsm_neighbors	30ft: median offset vs trusted LSM neighbors (26, 9, 25, 5) = -28 deg over 45 days
suspect	direction_vs_lsm_neighbors	sonic: median offset vs trusted LSM neighbors (26, 9, 25, 5) = -30 deg over 46 days
info	neighbor_direction	10ft: median offset vs ESF, AEX, OPL = +6 deg (IQR +4 to +8, 10 days)
info	solar_timing	overall solar timing offset +4 min over 31 clear days (positive = later than expected)
info	lsm_neighbors	LSM neighbors: 26 (40 km), 9 (62 km), 25 (66 km), 5 (71 km)
info	vs_lsm_neighbors	AirTF_Avg: median bias vs LSM neighbors -0.2 F over 144 days
info	vs_lsm_neighbors	RH_Avg: median bias vs LSM neighbors -1.3 % over 144 days
info	vs_lsm_neighbors	SeaLvlBaro_inHg_Avg: median bias vs LSM neighbors +0.002 inHg over 144 days
info	vs_lsm_neighbors	SlrW_Avg: daily solar total 0.99 x LSM neighbor median over 144 days
info	file_summary	41699 rows read, 41699 unique records, 2026-05-08 11:30:00 to 2026-10-04 05:15:00 (logger clock)
info	files_combined	record combined from 2 files: ULM_Stn34_FiveMin.dat.backup (2026-05-08 to 2026-09-28, SO397545 Univ of LA Measonet Rev05082026.Stn34.wndcor.CR1X); ULM_Stn34_FiveMin.dat (2026-09-28 to 2026-10-04, SO397545_Univ_of_LA_Measonet_Rev09282026.Stn34.wndcor.CR1X)
info	record_reset	RECORD reset 40025 -> 0 (program load or table reset)
info	gap	1138 missing records after 2026-05-08 11:30:00
info	gap	1 missing records after 2026-09-28 09:45:00
info	ch200_stale	1 records where the CH200 didn't answer: its other values (left over from the last good read) set to missing
info	startup_zeros	6 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 = 24°. 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
2026-05-08 11:30 to 2026-09-28 09:45	40,026	-25°	-27°	+6°	+156°	-48°	not explained
2026-09-28 09:55 to 2026-10-04 05:05	1,671	+7°	+4°	–	+156°	-48°	correct / aligned

Proposed corrections (not applied; copy into stations.yaml to use):

sensor	start	end	add	apply	reason
30ft	2026-05-08 11:30	2026-09-28 09:45	25	False	empirical (median vs reference); observed -25 deg (airports)
sonic	2026-05-08 11:30	2026-09-28 09:45	27	False	empirical (median vs reference); observed -27 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	12.75 V	12.83 V
Lowest battery reading	12.72 V
Charged in / used per day	4.7 / 2.5 Ah
Reached full charge (float)	8:35 am	8:20 am
Solar input, sunny-day peak	20.7 V	~21 V
Overnight draw	0.112 A
Charger temperature max	39 °C
Charger minus logger voltage	+0.14 V	wire drop
CH200 readings missing	0.0%
Battery vs network, last 30 days	-0.01 V per 30 days	falling = weakening

Flag counts by test

variable	test	level	records	% of record
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	failure	288	0.69
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	failure	288	0.69
T109_30ft_F_Avg	range	failure	6	0.01
T109_10ft_F_Avg	range	failure	5	0.01
SoilTmpF_100cm_Avg	range	failure	2	0.00
SoilTmpF_30cm_Avg	range	failure	2	0.00
SoilTmpF_40cm_Avg	range	failure	2	0.00
SoilTmpF_50cm_Avg	range	failure	2	0.00
SoilTmpF_60cm_Avg	range	failure	2	0.00
SoilTmpF_75cm_Avg	range	failure	2	0.00
AirTF_Avg	range	failure	1	0.00
DewPtF	dewpoint_gt_air	failure	1	0.00
DewPtF	range	failure	1	0.00
RH_Avg	dewpoint_gt_air	failure	1	0.00
SoilTmpF_10cm_Avg	range	failure	1	0.00
SoilTmpF_20cm_Avg	range	failure	1	0.00
SoilTmpF_5cm_Avg	range	failure	1	0.00
BulkEC_100cm_Avg	soil_depth_duplicate	suspect	39907	95.70
BulkEC_60cm_Avg	soil_depth_duplicate	suspect	39907	95.70
BulkEC_75cm_Avg	soil_depth_duplicate	suspect	39907	95.70
Ka_100cm_Avg	soil_depth_duplicate	suspect	39907	95.70
Ka_60cm_Avg	soil_depth_duplicate	suspect	39907	95.70
Ka_75cm_Avg	soil_depth_duplicate	suspect	39907	95.70
SoilTmpF_100cm_Avg	soil_depth_duplicate	suspect	39907	95.70
SoilTmpF_60cm_Avg	soil_depth_duplicate	suspect	39907	95.70
SoilTmpF_75cm_Avg	soil_depth_duplicate	suspect	39907	95.70
VWC_100cm_Avg	soil_depth_duplicate	suspect	39907	95.70
VWC_60cm_Avg	soil_depth_duplicate	suspect	39907	95.70
VWC_75cm_Avg	soil_depth_duplicate	suspect	39907	95.70
WindDir_Sonic_D1_WVT	direction_vs_other_sensors	suspect	9662	23.17
WindDir_30ft_D1_WVT	direction_vs_other_sensors	suspect	9091	21.80
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	suspect	6336	15.19
WindDir_Sonic_D1_WVT	direction_vs_neighbors	suspect	4896	11.74
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	suspect	4320	10.36
WindDir_30ft_D1_WVT	direction_vs_neighbors	suspect	4320	10.36
T109_30ft_F_Avg	temperature_triad	suspect	841	2.02
T109_10ft_F_Avg	temperature_triad	suspect	246	0.59
SoilTmpF_5cm_Avg	range	suspect	31	0.07
SlrW_Avg	solar_above_clearsky	suspect	15	0.04
SoilTmpF_5cm_Avg	step	suspect	2	0.00
BulkEC_40cm_Avg	soil_depth_duplicate	suspect	1	0.00
BulkEC_50cm_Avg	soil_depth_duplicate	suspect	1	0.00
Ka_40cm_Avg	soil_depth_duplicate	suspect	1	0.00
Ka_50cm_Avg	soil_depth_duplicate	suspect	1	0.00
RH_Avg	range	suspect	1	0.00
SoilTmpF_40cm_Avg	soil_depth_duplicate	suspect	1	0.00
SoilTmpF_50cm_Avg	soil_depth_duplicate	suspect	1	0.00
VWC_40cm_Avg	soil_depth_duplicate	suspect	1	0.00
VWC_50cm_Avg	soil_depth_duplicate	suspect	1	0.00

Largest failure events

start (local)	end (local)	n	variable	test	detail
2026-09-08 00:00	2026-09-08 23:55	288	WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	daily direction differs from trusted LSM neighbors by > 60 deg
2026-05-08 11:30	2026-05-12 10:45	6	T109_30ft_F_Avg	range	outside hard limits [-20, 120]
2026-05-08 11:30	2026-05-08 11:30	1	DewPtF	dewpoint_gt_air	dewpoint above air temperature
2026-09-28 09:55	2026-09-28 09:55	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.