condition mean min max 4 h after light 2.672733666666667 2.620476 2.744174 8 h after light 2.4218786666666667 2.314502 2.5558810000000003 12 h after light 1.374018 1.321895 1.470142 16 h after light 2.684168666666667 2.279106 3.196802 4 h after dark 2.171733 1.9590580000000002 2.474839 8 h after dark 1.463601 1.3893790000000001 1.5119209999999998