condition mean min max 4 h after light 2.86221 2.20665 3.51777 8 h after light 2.45971 2.40215 2.51727 12 h after light 2.471165 2.02281 2.91952 4 h after dark 1.70562 1.25103 2.41293 8 h after dark 2.54213 1.30157 3.56535 12 h after dark 3.335563333333333 1.93299 4.09765