# extracted from http://www.astrium-geo.com/files/pmedia/public/r453_9_spectralsensivity.xls
# second column HRV1, third column HRV2
470 0.001 0.001
480 0.006 0.003
490 0.179 0.007
500 0.502 0.319
510 0.724 0.610
520 0.863 0.770
530 0.971 0.876
540 1.000 0.955
550 0.950 1.000
560 0.852 0.966
570 0.734 0.847
580 0.640 0.718
590 0.458 0.510
600 0.220 0.325
610 0.055 0.120
620 0.010 0.045
630 0.004 0.016
640 0.002 0.001
