condition mean min max 4 h after light 13.816849999999999 12.8049 14.8288 8 h after light 9.346045 7.19179 11.5003 12 h after light 10.01819 7.50868 12.5277 4 h after dark 14.1279 10.0159 16.861 8 h after dark 16.134933333333333 12.7897 18.5403 12 h after dark 23.079266666666665 19.245 30.4181