condition	mean	min	max
4 h after light	17.8653775	15.925235	19.80552
8 h after light	16.651523	15.719905	17.583141
12 h after light	14.4540845	13.905341	15.002828
4 h after dark	14.3332375	14.267758	14.398717
8 h after dark	16.1656745	15.130751	17.200598
12 h after dark	21.933647	21.933647	21.933647