condition mean min max 4 h after light 1085.9 1085.9 1085.9 8 h after light 980.55 860.5 1100.6 12 h after light 888.3 816.8 959.8 4 h after dark 743.3499999999999 728.9 757.8 8 h after dark 608.2 548.2 668.2 12 h after dark 740.85 673.5 808.2