condition mean min max 4 h after light 2.6308233333333337 2.5567290000000003 2.724133 8 h after light 2.2041963333333334 2.125391 2.277059 12 h after light 1.367803 1.294975 1.419469 16 h after light 2.680735 2.3703939999999997 3.123255 4 h after dark 2.179125 2.0224330000000004 2.4119509999999997 8 h after dark 1.4559790000000001 1.400959 1.4975