condition mean min max 4 h after light 1624.1494443333333 1484.993333 1789.32 8 h after light 1543.5055556666666 1440.55 1607.6 12 h after light 1228.0177776666667 1068.99 1308.61 1.5 h after dark 1380.946667 1198.406667 1711.686667 5.5 h after dark 1314.3944446666667 1112.086667 1548.49 9.5 h after dark 1810.2922223333333 1405.506667 2216.493333