[HDRI] hdrgen's response curve file

[Lars O. Grobe]

Hi list,

to compare the response curve as determined by hdrgen with the one by
pfstools, I would like to plot it using gnuplot. To do so, I would like
to know what the six values per line are. I guess with that info, I
should be able to plot a run using Paul E. Debevec's and Jitendra
Malik's algorithm as published.

I guess that the lines correspond to the sensor's channels, but
everything else is unknown to me right now...

Lars.