condition mean min max 0 h after light 12.83375 11.6784 13.9891 4 h after light 10.68727 7.86934 13.5052 8 h after light 24.7531 22.5468 26.9594 4 h after dark 22.433 17.9602 26.9058 8 h after dark 16.42675 15.7751 17.0784 12 h after dark 11.20508 9.31356 13.0966