condition mean min max 0 h after light 7.012375 5.24587 8.77888 4 h after light 4.5608699999999995 4.09997 5.02177 8 h after light 3.9585549999999996 3.80937 4.10774 4 h after dark 5.15459 4.38662 5.92256 8 h after dark 7.008240000000001 6.67419 7.34229 12 h after dark 6.85103 6.31925 7.38281