# extracted from http://www.astrium-geo.com/files/pmedia/public/r453_9_spectralsensivity.xls
# second column HRV1, third column HRV2
470 0.000 0.000
480 0.004 0.001
490 0.209 0.177
500 0.599 0.585
510 0.790 0.809
520 0.901 0.891
530 0.971 0.957
540 1.000 1.000
550 0.952 0.910
560 0.823 0.785
570 0.691 0.668
580 0.596 0.569
590 0.477 0.415
600 0.256 0.242
610 0.064 0.055
620 0.014 0.011
630 0.002 0.004
640 0.001 0.001
