condition mean min max 4 h after light 6.35079 4.77518 7.9264 8 h after light 7.035645000000001 6.65545 7.41584 12 h after light 8.57381 6.31652 10.8311 4 h after dark 11.829350000000002 10.8457 12.813 8 h after dark 9.23951 8.50675 9.97227 12 h after dark 9.783235 9.01737 10.5491