Data Quality

More about quality...

The single value code is an aggregation of three of the flags given by the quality control system. Below is a description of relevant values for each of the three flags: Flag 1 (useinfo[1] - deviation of original value from normed observation procedure):

Value	Description
0	normed observation period and observation time
1	observation time deviates from the norm
2	observation period is shorter than the norm
3	observation period is longer than the norm
4	observation time deviates from the norm, observation period is shorter than the norm
5	observation time deviates from the norm, observation period is longer than the norm
8	original value is missing
9	status information not given

Flag 2 (useinfo[2] - quality level of the original value):

Value	Description
0	original value found to be good
1	original value suspicious (likely correct)
2	original value suspicious (likely erroneous)
3	original value definitely erroneous
9	no quality information given

Flag 3 (useinfo[3] - treatment of the original value):

Value	Description
0	original value is kept unchanged
1	original value is manually or automatically corrected with a good result
2	original value is manually or automatically interpolated with a good result
3	original value is automatically corrected
4	original value is automatically interpolated
5	original value is manually created from accumulated values
6	original value is automatically created from accumulated values
8	original value is thrown out
9	quality information is not given

The final quality code is converted from the three flags according to the following table (the asterisk '*' matches anything):

Flag 1	Flag 2	Flag 3	Quality code
1	9	9	5
4	9	9	5
5	9	9	5
8	9	9	5
8	9	8	7
0	3	8	7
2	3	8	7
3	3	8	7
8	3	8	7
9	3	8	7
3	3	9	7
3	0	8	7
0	0	8	7
*	*	1	1
*	*	2	1
*	*	3	6
*	*	4	6
*	*	5	1
*	*	6	1
*	0	*	0
*	9	*	2
*	1	0	4
*	2	0	5
*	3	0	7
*	3	8	7