condition mean min max 4 h after light 3088.1890615 2812.453759 3363.924364 8 h after light 2840.6339865 2652.903449 3028.364524 12 h after light 3440.718024 3366.282069 3515.153979 4 h after dark 3500.6565505 3494.383998 3506.929103 8 h after dark 3196.5269485 2908.924364 3484.129533 12 h after dark 3485.198931 3485.198931 3485.198931