# extracted from http://www.astrium-geo.com/files/pmedia/public/r453_9_spectralsensivity.xls
# second column HRV1, third column HRV2
470 0.002 0.000
480 0.098 0.038
490 0.364 0.310
500 0.586 0.594
510 0.750 0.756
520 0.861 0.885
530 0.946 0.962
540 1.000 1.000
550 0.786 0.791
560 0.625 0.642
570 0.528 0.579
580 0.421 0.463
590 0.194 0.164
600 0.035 0.042
610 0.007 0.009
620 0.002 0.002
