condition mean min max 4 h after light 1348.4 1348.4 1348.4 8 h after light 1409.15 1386.4 1431.9 12 h after light 1634.85 1440.9 1828.8 4 h after dark 1827.45 1653.7 2001.2 8 h after dark 1973.0500000000002 1864.8 2081.3 12 h after dark 1711.95 1629.0 1794.9