CSV

The CSV (character separated values) file format is structured in the following way:

RT(milliseconds);RT(minutes) - NOT USED BY IMPORT;RI;15;16;17;18;19;...
5190;0.0865;0.0;170.0;735.0;1378.0;7122.0;0.0;...

Explanation

The first column contains the retention time in milliseconds.

RT(milliseconds) : 5190

The second column contains the retention time in minutes. The value will be not used for imports. It's just to support humans, cause who knows without calculation that 5190 ms are 0.0865 minutes. RT(minutes) - NOT USED BY IMPORT : 0.0865

The third column contains the retention index.

 RI : 0.0 

The following columns are the m/z matrix. It starts with the lowest m/z value, e.g. m/z 15 or m/z 32 or ... it depends on the data set. The first row marks the m/z values. Each following row represents a scan. Hence, it contains the intensity of the corresponding m/z value. The intensity is 0 if there's no such m/z value.

15: 170.0
16: 735.0
17: 1378.0
18: 7122.0
19: 0.0
...