condition mean min max 4 h after light 40.906351 38.565551 43.247151 8 h after light 43.176665 43.020674 43.332656 12 h after light 40.4364875 39.170438 41.702537 4 h after dark 31.071143 26.335437 35.806849 8 h after dark 35.333445499999996 35.227986 35.438905 12 h after dark 39.908293 39.908293 39.908293