3
Approximately
Self explanatory.
4
Equal to
Self explanatory.
5
Greater than or equal to
Self explanatory.
6
Greater than
Self explanatory.
7
Less than
Self explanatory.
8
Less than or equal to
Self explanatory.
10
Not equal to
Self explanatory.
11
Trace
Description to be provided.
12
True value
Description to be provided.
13
Observed value
Description to be provided.
15
Out of range
Self explanatory.