What are the -901 and -902 numbers all
The -901 means the data value is missing.
This can happen due to remote gage mechanical malfunction or interrupted
data transfers. The -901 value can also be placed in the data set by
Water Management's data quality checking programs or the database
manager. Our data are checked for specific quality characteristics
automatically every hour and verified manually once a day.
Quality Characteristics Tested:
Rate of Change
The -902 number means the data value is invalid.
If an incoming data value fails a quality check, the value sent is
replaced by a -902 value. The database manager can then decide to change
the value to a -901 (missing value) or replace the bad value with an
accurate data value.
Last Updated on Tuesday, 28-Sep-2004