Hakai QC Flags

The quality control flags (codes) used across different Hakai research programs are listed and defined in the table below.

Code	Name	Comments/description
AV	Accepted value	Has been reviewed and looks good
SVC	Suspicious value - caution	Value appears to be suspect, use with caution
SVD	Suspicious value - reject	Value is clearly suspect, recommend discarding
EV	Estimated value	Value has been estimated
NA	Not available	No value available
MV	Missing value	No measured value available because of equipment failure, etc.
LB	Low battery	Sensor battery dropped below a threshold
CD	Calibration due	Sensor needs to be sent back to the manufacturer for calibration
CE	Calibration expired	Value was collected with a sensor that is past due for calibration
IC	Invalid chronology	One or more non‐sequential date/time values
PV	Persistent value	Repeated value for an extended period
AR	Above range	Value above a specified upper limit
BR	Below range	Value below a specified lower limit
SE	Slope exceedance	Value much greater than the previous value, resulting in an unrealistic slope
SI	Spatial inconsistency	Value greatly differed from values collected from nearby sensors
II	Internal inconsistency	Value was inconsistent with another related measurement
BDL	Below detection limit	Value was below the established detection limit of the sensor
ADL	Above detection limit	Value was above the established detection limit of the sensor