condition mean min max 4 h after light 1782.538889 1708.53 1824.73 8 h after light 1707.8205553333332 1612.973333 1794.743333 12 h after light 1675.3733333333334 1472.99 1830.71 1.5 h after dark 1551.5311113333332 1371.926667 1814.45 5.5 h after dark 1168.3611111 839.2833333 1521.616667 9.5 h after dark 1331.911111 976.32 1586.823333