Station 18 — Many: QC report

ULM_Stn18 · CR1000X s/n 58327 · table FiveMin · file header program CPU:SO397545_Univ_of_LA_Measonet_Rev09282026.Stn18.wndcor.CR1X
2025-07-22 15:15 to 2026-10-04 05:15 logger clock · generated 2026-10-04 03:16

126,311unique 5-min records

38,497values flagged failure

1,598,732values flagged suspect

0dated corrections applied

Station-level findings

level	test	finding
failure	direction_vs_lsm_neighbors	30ft: median offset vs trusted LSM neighbors (10, 13, 5) = -33 deg over 60 days
suspect	direction_vs_other_sensors	30ft-10ft: median daily difference -35 deg over 246 days
suspect	direction_vs_other_sensors	10ft-sonic: median daily difference +30 deg over 247 days
suspect	neighbor_direction	30ft: median offset vs IER, POE, DRI = -27 deg (IQR -33 to -22, 47 days)
suspect	neighbor_direction	sonic: median offset vs IER, POE, DRI = -25 deg (IQR -32 to -19, 63 days)
suspect	soil_depth_duplicate	50 cm duplicates 40 cm on 1 days
suspect	soil_depth_duplicate	60 cm duplicates 50 cm on 430 days
suspect	soil_depth_duplicate	75 cm duplicates 60 cm on 433 days
suspect	soil_depth_duplicate	100 cm duplicates 75 cm on 433 days
suspect	direction_vs_lsm_neighbors	sonic: median offset vs trusted LSM neighbors (10, 13, 5) = -29 deg over 83 days
suspect	clock_step	logger clock stepped -1 h (from 2025-11-02 19:05:00 to 2025-11-02 18:10:00)
suspect	clock_step	logger clock stepped +1 h (from 2026-03-08 14:55:00 to 2026-03-08 16:00:00)
info	neighbor_direction	10ft: median offset vs IER, POE, DRI = +5 deg (IQR -8 to +12, 35 days)
info	solar_timing	overall solar timing offset -2 min over 112 clear days (positive = later than expected)
info	lsm_neighbors	LSM neighbors: 35 (45 km), 10 (51 km), 13 (53 km), 5 (80 km)
info	vs_lsm_neighbors	AirTF_Avg: median bias vs LSM neighbors -1.0 F over 438 days
info	vs_lsm_neighbors	RH_Avg: median bias vs LSM neighbors -0.7 % over 438 days
info	vs_lsm_neighbors	SeaLvlBaro_inHg_Avg: median bias vs LSM neighbors -0.001 inHg over 438 days
info	vs_lsm_neighbors	rain total 40.9 in vs LSM neighbor median 35.6 in over shared days (ratio 1.15); missed-rain days 0, rain-only-here days 0
info	vs_lsm_neighbors	SlrW_Avg: daily solar total 0.99 x LSM neighbor median over 416 days
info	direction_vs_lsm_neighbors	10ft: median offset vs trusted LSM neighbors (10, 13, 5) = +2 deg over 43 days
info	file_summary	126311 rows read, 126311 unique records, 2025-07-22 15:15:00 to 2026-10-04 05:15:00 (logger clock)
info	files_combined	record combined from 2 files: ULM_Stn18_FiveMin.dat.backup (2025-07-22 to 2026-09-28, SO397545 Univ of LA Measonet Rev07212025.Station18.CR1X); ULM_Stn18_FiveMin.dat (2026-09-28 to 2026-10-04, SO397545_Univ_of_LA_Measonet_Rev09282026.Stn18.wndcor.CR1X)
info	record_reset	RECORD reset 84400 -> 0 (program load or table reset)
info	record_reset	RECORD reset 40295 -> 0 (program load or table reset)
info	gap	1 missing records after 2026-05-11 11:05:00
info	gap	1 missing records after 2026-09-28 09:10:00
info	ch200_stale	1 records where the CH200 didn't answer: its other values (left over from the last good read) set to missing

Wind direction

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

Measured offset W = 210°. 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
2025-07-22 15:15 to 2026-05-11 11:05	84,335	-28°	-25°	+6°	-30°	-60°	no correction code
2026-05-11 11:15 to 2026-09-28 09:10	40,296	-63°	-59°	-12°	-30°	-60°	sign-flipped code
2026-09-28 09:20 to 2026-10-04 05:05	1,678	+1°	+7°	–	-30°	-60°	correct / aligned

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

sensor	start	end	add	apply	reason
30ft	2025-07-22 15:15	2026-05-11 11:05	30	False	model: no correction code with W=210; observed -28 deg (airports)
sonic	2025-07-22 15:15	2026-05-11 11:05	30	False	model: no correction code with W=210; observed -25 deg (airports)
30ft	2026-05-11 11:15	2026-09-28 09:10	60	False	model: sign-flipped code with W=210; observed -63 deg (airports)
sonic	2026-05-11 11:15	2026-09-28 09:10	60	False	model: sign-flipped code with W=210; observed -59 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	12.85 V	12.83 V
Lowest battery reading	12.81 V
Charged in / used per day	5.2 / 2.4 Ah
Reached full charge (float)	8:20 am	8:20 am
Solar input, sunny-day peak	20.9 V	~21 V
Overnight draw	0.108 A
Charger temperature max	39 °C
Charger minus logger voltage	+0.06 V	wire drop
CH200 readings missing	0.0%
Battery vs network, last 30 days	+0.00 V per 30 days	falling = weakening

Flag counts by test

variable	test	level	records	% of record
WindDir_30ft_D1_WVT	direction_vs_other_sensors	failure	18719	14.82
WindDir_Sonic_D1_WVT	direction_vs_other_sensors	failure	18718	14.82
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	failure	288	0.23
WS_10ft_mph_Avg	zero_speed_while_windy	failure	102	0.08
WS_10ft_mph_Max	zero_speed_while_windy	failure	102	0.08
WindDir_10ft_D1_WVT	zero_speed_while_windy	failure	102	0.08
WS_30ft_mph_Avg	zero_speed_while_windy	failure	98	0.08
WS_30ft_mph_Max	zero_speed_while_windy	failure	98	0.08
WindDir_30ft_D1_WVT	zero_speed_while_windy	failure	98	0.08
WS_Sonic_mph_Avg	sonic_error_value	failure	34	0.03
WS_Sonic_mph_Max	range	failure	34	0.03
WS_Sonic_mph_Max	sonic_error_value	failure	34	0.03
WindDir_Sonic_D1_WVT	sonic_error_value	failure	34	0.03
WindDir_Sonic_SD1_WVT	sonic_error_value	failure	34	0.03
WS_Sonic_mph_Avg	range	failure	25	0.02
T109_30ft_F_Avg	temperature_triad	failure	4	0.00
AbsBaro_inHg_Avg	range	failure	3	0.00
SeaLvlBaro_inHg_Avg	range	failure	3	0.00
SoilTmpF_100cm_Avg	range	failure	3	0.00
SoilTmpF_10cm_Avg	range	failure	3	0.00
SoilTmpF_20cm_Avg	range	failure	3	0.00
SoilTmpF_30cm_Avg	range	failure	3	0.00
SoilTmpF_40cm_Avg	range	failure	3	0.00
SoilTmpF_50cm_Avg	range	failure	3	0.00
SoilTmpF_5cm_Avg	range	failure	3	0.00
SoilTmpF_60cm_Avg	range	failure	3	0.00
SoilTmpF_75cm_Avg	range	failure	3	0.00
AirTF_Avg	temperature_triad	failure	1	0.00
BulkEC_100cm_Avg	soil_depth_duplicate	suspect	124520	98.58
BulkEC_75cm_Avg	soil_depth_duplicate	suspect	124520	98.58
Ka_100cm_Avg	soil_depth_duplicate	suspect	124520	98.58
Ka_75cm_Avg	soil_depth_duplicate	suspect	124520	98.58
SoilTmpF_100cm_Avg	soil_depth_duplicate	suspect	124520	98.58
SoilTmpF_75cm_Avg	soil_depth_duplicate	suspect	124520	98.58
VWC_100cm_Avg	soil_depth_duplicate	suspect	124520	98.58
VWC_75cm_Avg	soil_depth_duplicate	suspect	124520	98.58
BulkEC_60cm_Avg	soil_depth_duplicate	suspect	123656	97.90
Ka_60cm_Avg	soil_depth_duplicate	suspect	123656	97.90
SoilTmpF_60cm_Avg	soil_depth_duplicate	suspect	123656	97.90
VWC_60cm_Avg	soil_depth_duplicate	suspect	123656	97.90
WindDir_Sonic_D1_WVT	direction_vs_other_sensors	suspect	69981	55.40
WindDir_30ft_D1_WVT	direction_vs_other_sensors	suspect	69695	55.18
WindDir_Sonic_D1_WVT	direction_vs_lsm_neighbors	suspect	10944	8.66
WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	suspect	10080	7.98
WindDir_30ft_D1_WVT	direction_vs_neighbors	suspect	5184	4.10
WindDir_Sonic_D1_WVT	direction_vs_neighbors	suspect	5184	4.10
T109_30ft_F_Avg	temperature_triad	suspect	1223	0.97
T109_10ft_F_Avg	temperature_triad	suspect	900	0.71
AirTF_Avg	temperature_triad	suspect	539	0.43
BulkEC_50cm_Avg	soil_depth_duplicate	suspect	288	0.23
Ka_50cm_Avg	soil_depth_duplicate	suspect	288	0.23
SoilTmpF_50cm_Avg	soil_depth_duplicate	suspect	288	0.23
VWC_50cm_Avg	soil_depth_duplicate	suspect	288	0.23
VWC_30cm_Avg	range	suspect	123	0.10
SlrW_Avg	solar_above_clearsky	suspect	30	0.02
RV_Pre_Accu_Tot	rain_with_low_rh	suspect	22	0.02
WindDir_Sonic_D1_WVT	stuck_direction	suspect	11	0.01
WindDir_Sonic_SD1_WVT	stuck_direction	suspect	11	0.01
AirTF_Avg	step	suspect	4	0.00
WS_Sonic_mph_Avg	range	suspect	2	0.00
SlrW_Avg	range	suspect	1	0.00

Largest failure events

start (local)	end (local)	n	variable	test	detail
2026-08-16 00:00	2026-08-24 23:55	2592	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-28 00:00	2026-08-02 23:55	1728	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-05-15 00:00	2026-05-19 23:55	1440	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-09-16 00:00	2026-09-20 23:55	1440	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-09-11 00:00	2026-09-14 23:55	1152	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-02 00:00	2026-06-05 23:55	1152	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-09-22 00:00	2026-09-25 23:55	1152	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-26 00:00	2026-06-28 23:55	864	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-08-26 00:00	2026-08-28 23:55	864	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-08-12 00:00	2026-08-14 23:55	864	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-08-31 00:00	2026-09-02 23:55	864	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-22 00:00	2026-07-23 23:55	576	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-08-06 00:00	2026-08-07 23:55	576	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-02-15 00:00	2026-02-15 23:55	288	WindDir_30ft_D1_WVT	direction_vs_lsm_neighbors	daily direction differs from trusted LSM neighbors by > 60 deg
2026-05-21 00:00	2026-05-21 23:55	288	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-11 00:00	2026-06-11 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-07 00:00	2026-06-07 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-26 00:00	2026-07-26 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-05 00:00	2026-07-05 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-02 00:00	2026-07-02 23:55	288	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-23 00:00	2026-06-23 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-21 00:00	2026-06-21 23:55	288	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-17 00:00	2026-06-17 23:55	288	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-05-27 00:00	2026-05-27 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-07-14 00:00	2026-07-14 23:55	288	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-05-11 00:00	2026-05-11 23:55	287	WindDir_30ft_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-06-28 15:40	2026-06-28 23:55	100	WindDir_Sonic_D1_WVT	direction_vs_other_sensors	daily mean direction differs from the 10ft sensor (confirmed against airports) by > 45 deg
2026-01-25 11:30	2026-01-25 14:30	37	WS_10ft_mph_Max	zero_speed_while_windy	reads 0 for >= 12 records while another anemometer >= 5.0 mph
2026-01-25 14:40	2026-01-25 16:50	27	WindDir_30ft_D1_WVT	zero_speed_while_windy	reads 0 for >= 12 records while another anemometer >= 5.0 mph
2026-01-25 17:00	2026-01-25 18:35	20	WindDir_30ft_D1_WVT	zero_speed_while_windy	reads 0 for >= 12 records while another anemometer >= 5.0 mph
2026-01-09 16:45	2026-01-09 18:10	18	WS_Sonic_mph_Avg	sonic_error_value	WindSonic4 error value (999.99 m/s) inside the 5-min interval
2026-01-09 16:45	2026-01-09 18:10	18	WS_Sonic_mph_Max	range	outside hard limits [0, 134]
2026-01-25 02:45	2026-01-25 04:10	18	WindDir_10ft_D1_WVT	zero_speed_while_windy	reads 0 for >= 12 records while another anemometer >= 5.0 mph
2026-01-25 03:05	2026-01-25 04:10	14	WindDir_30ft_D1_WVT	zero_speed_while_windy	reads 0 for >= 12 records while another anemometer >= 5.0 mph
2026-02-07 03:20	2026-02-07 03:35	4	T109_30ft_F_Avg	temperature_triad	differs from other two temperature sensors by > 10.0 F
2026-01-10 00:25	2026-01-10 00:35	3	WS_Sonic_mph_Max	range	outside hard limits [0, 134]
2026-01-10 00:25	2026-01-10 00:35	3	WindDir_Sonic_D1_WVT	sonic_error_value	WindSonic4 error value (999.99 m/s) inside the 5-min interval
2025-08-12 10:25	2025-08-12 10:30	2	AbsBaro_inHg_Avg	range	outside hard limits [27.0, 31.5]
2026-01-10 00:50	2026-01-10 00:55	2	WS_Sonic_mph_Max	range	outside hard limits [0, 134]
2026-01-10 00:50	2026-01-10 00:55	2	WS_Sonic_mph_Avg	sonic_error_value	WindSonic4 error value (999.99 m/s) inside the 5-min interval

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.