Station 39 — Stonewall: QC report

ULM_Stn39 · CR1000X s/n 59188 · table FiveMin · file header program CPU:SO397545_Univ_of_LA_Measonet_Rev09282026.Stn39.wndcor.CR1X
2026-09-08 08:05 to 2026-10-04 05:15 logger clock · generated 2026-10-04 03:20

6,854unique 5-min records

2,637values flagged failure

77,667values flagged suspect

0dated corrections applied

Station-level findings

level	test	finding
failure	direction_vs_other_sensors	30ft-10ft: median daily difference +145 deg over 9 days
failure	direction_vs_other_sensors	10ft-sonic: median daily difference -147 deg over 9 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 19 days
suspect	soil_depth_duplicate	75 cm duplicates 60 cm on 19 days
suspect	soil_depth_duplicate	100 cm duplicates 75 cm on 19 days
info	solar_timing	overall solar timing offset +1 min over 8 clear days (positive = later than expected)
info	soil_dry_limit	5 cm at the SoilVUE's dry limit (VWC 0, permittivity 2.51): very dry topsoil, not a fault; 3 of 4 nearest LSM stations are also at or near their driest at 5 cm
info	lsm_neighbors	LSM neighbors: 23 (49 km), 10 (54 km), 3 (74 km), 18 (82 km)
info	vs_lsm_neighbors	AirTF_Avg: median bias vs LSM neighbors +0.3 F over 23 days
info	vs_lsm_neighbors	RH_Avg: median bias vs LSM neighbors -4.4 % over 23 days
info	vs_lsm_neighbors	SeaLvlBaro_inHg_Avg: median bias vs LSM neighbors -0.004 inHg over 23 days
info	vs_lsm_neighbors	SlrW_Avg: daily solar total 1.01 x LSM neighbor median over 23 days
info	file_summary	6854 rows read, 6854 unique records, 2026-09-08 08:05:00 to 2026-10-04 05:15:00 (logger clock)
info	files_combined	record combined from 2 files: ULM_Stn39_FiveMin.dat.backup (2026-09-08 to 2026-09-28, SO397545 Univ of LA Measonet Rev09082026.Stn39.wndcor.CR1X); ULM_Stn39_FiveMin.dat (2026-09-28 to 2026-10-04, SO397545_Univ_of_LA_Measonet_Rev09282026.Stn39.wndcor.CR1X)
info	record_reset	RECORD reset 5183 -> 0 (program load or table reset)
info	gap	599 missing records after 2026-09-08 08:15:00
info	gap	2 missing records after 2026-09-28 09:55:00
info	ch200_stale	3 records where the CH200 didn't answer: its other values (left over from the last good read) set to missing
info	startup_zeros	18 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 = 30°. 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
2026-09-08 08:05 to 2026-09-28 09:55	5,184	–	–	–	+150°	-60°	not explained
2026-09-28 10:10 to 2026-10-04 05:05	1,668	–	–	–	+150°	-60°	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	12.83 V	12.83 V
Lowest battery reading	12.78 V
Charged in / used per day	4.5 / 2.4 Ah
Reached full charge (float)	8:45 am	8:20 am
Solar input, sunny-day peak	20.9 V	~21 V
Overnight draw	0.099 A
Charger temperature max	40 °C
Charger minus logger voltage	+0.07 V	wire drop
CH200 readings missing	0.0%
Battery vs network, last 30 days	+0.33 V per 30 days	falling = weakening

Flag counts by test

variable	test	level	records	% of record
WindDir_10ft_D1_WVT	direction_vs_other_sensors	failure	1440	21.01
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	failure	576	8.40
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	failure	576	8.40
T109_10ft_F_Avg	range	failure	8	0.12
T109_30ft_F_Avg	range	failure	8	0.12
AirTF_Avg	range	failure	3	0.04
SoilTmpF_100cm_Avg	range	failure	3	0.04
SoilTmpF_30cm_Avg	range	failure	3	0.04
SoilTmpF_40cm_Avg	range	failure	3	0.04
SoilTmpF_50cm_Avg	range	failure	3	0.04
SoilTmpF_60cm_Avg	range	failure	3	0.04
SoilTmpF_75cm_Avg	range	failure	3	0.04
T109_30ft_F_Avg	step	failure	2	0.03
AbsBaro_inHg_Avg	range	failure	1	0.01
RH_Avg	range	failure	1	0.01
SeaLvlBaro_inHg_Avg	range	failure	1	0.01
SoilTmpF_10cm_Avg	range	failure	1	0.01
SoilTmpF_20cm_Avg	range	failure	1	0.01
SoilTmpF_5cm_Avg	range	failure	1	0.01
BulkEC_5cm_Avg	soil_air_gap	suspect	5470	79.81
Ka_5cm_Avg	soil_air_gap	suspect	5470	79.81
VWC_5cm_Avg	soil_air_gap	suspect	5470	79.81
BulkEC_100cm_Avg	soil_depth_duplicate	suspect	5058	73.80
BulkEC_60cm_Avg	soil_depth_duplicate	suspect	5058	73.80
BulkEC_75cm_Avg	soil_depth_duplicate	suspect	5058	73.80
Ka_100cm_Avg	soil_depth_duplicate	suspect	5058	73.80
Ka_60cm_Avg	soil_depth_duplicate	suspect	5058	73.80
Ka_75cm_Avg	soil_depth_duplicate	suspect	5058	73.80
SoilTmpF_100cm_Avg	soil_depth_duplicate	suspect	5058	73.80
SoilTmpF_60cm_Avg	soil_depth_duplicate	suspect	5058	73.80
SoilTmpF_75cm_Avg	soil_depth_duplicate	suspect	5058	73.80
VWC_100cm_Avg	soil_depth_duplicate	suspect	5058	73.80
VWC_60cm_Avg	soil_depth_duplicate	suspect	5058	73.80
VWC_75cm_Avg	soil_depth_duplicate	suspect	5058	73.80
WindDir_10ft_D1_WVT	direction_vs_other_sensors	suspect	1440	21.01
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	suspect	576	8.40
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	suspect	576	8.40
T109_30ft_F_Avg	temperature_triad	suspect	527	7.69
T109_10ft_F_Avg	temperature_triad	suspect	28	0.41
RH_Avg	range	suspect	5	0.07
T109_30ft_F_Avg	step	suspect	2	0.03
BulkEC_40cm_Avg	soil_depth_duplicate	suspect	1	0.01
BulkEC_50cm_Avg	soil_depth_duplicate	suspect	1	0.01
Ka_40cm_Avg	soil_depth_duplicate	suspect	1	0.01
Ka_50cm_Avg	soil_depth_duplicate	suspect	1	0.01
SlrW_Avg	solar_above_clearsky	suspect	1	0.01
SoilTmpF_40cm_Avg	soil_depth_duplicate	suspect	1	0.01
SoilTmpF_50cm_Avg	soil_depth_duplicate	suspect	1	0.01
VWC_40cm_Avg	soil_depth_duplicate	suspect	1	0.01
VWC_50cm_Avg	soil_depth_duplicate	suspect	1	0.01

Largest failure events

start (local)	end (local)	n	variable	test	detail
2026-09-22 00:00	2026-09-25 23:55	1152	WindDir_10ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from both other sensors by > 45 deg
2026-09-23 00:00	2026-09-24 23:55	576	WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	daily direction differs from trusted LSM neighbors by > 60 deg
2026-09-17 00:00	2026-09-17 23:55	288	WindDir_10ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from both other sensors by > 45 deg
2026-09-08 08:05	2026-09-10 10:35	8	T109_30ft_F_Avg	range	outside hard limits [-20, 120]
2026-09-10 10:40	2026-09-10 10:45	2	T109_30ft_F_Avg	step	5-min change > 20
2026-09-08 08:10	2026-09-08 08:10	1	SoilTmpF_60cm_Avg	range	outside hard limits [10, 125]
2026-09-10 10:15	2026-09-10 10:15	1	AbsBaro_inHg_Avg	range	outside hard limits [27.0, 31.5]
2026-09-28 10:10	2026-09-28 10:10	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.