condition mean min max 4 h after light 2.146555 2.138 2.15511 8 h after light 3.7059800000000003 3.53513 3.87683 12 h after light 3.684485 3.60797 3.761 4 h after dark 3.33893 3.1264 3.55146 8 h after dark 2.83999 2.64754 3.03244 12 h after dark 2.834835 2.54857 3.1211