condition mean min max 0 h after light 8.158275 5.81745 10.4991 2 h after light 7.856685 6.68482 9.02855 4 h after light 7.69454 7.04419 8.34489 8 h after light 7.36308 7.2448 7.48136 12 h after light 9.801935 8.76417 10.8397 2 h after dark 13.0866 12.2572 13.916 4 h after dark 10.589649999999999 10.3256 10.8537 8 h after dark 11.93405 10.9696 12.8985 12 h after dark 10.00601 8.85812 11.1539