Codebook Schema

[kitswas]

Is there a schema for the format of the sample codebook files?
A codebook excerpt follows below:

1
1
1
1
0
11.220185
13.856919
12.038034
12.833152
14.035317
17.278260
17.954225
16.895762
19.573418
18.836491
18.243624
17.556763
18.836491
18.360685
...

I am afraid this file is not self-descriptive.