condition mean min max 4 h after light 9620.115453499999 9602.149609 9638.081298 8 h after light 10185.964329999999 10075.77052 10296.15814 12 h after light 9911.0445425 9534.693595 10287.39549 4 h after dark 10769.743705 10480.64531 11058.8421 8 h after dark 9833.69054 8988.18797 10679.19311 12 h after dark 10228.00677 10228.00677 10228.00677