condition mean min max 4 h after light 10.29459 8.78828 11.8009 8 h after light 11.29515 11.124 11.4663 12 h after light 11.396799999999999 11.2418 11.5518 4 h after dark 14.7381 14.6187 14.8677 8 h after dark 15.054066666666667 14.1443 16.2966 12 h after dark 11.487066666666667 9.6835 14.3658