condition mean min max 0 h after light 6.008554999999999 5.77356 6.24355 4 h after light 7.5847 7.3396 7.8298 8 h after light 8.659245 7.57778 9.74071 4 h after dark 9.33681 8.01872 10.6549 8 h after dark 13.4223 12.5347 14.3099 12 h after dark 9.133585 8.91443 9.35274