condition	mean	min	max
4 h after light	5.11621	3.96937	6.26305
8 h after light	3.176685	2.29336	4.06001
12 h after light	2.879345	2.86119	2.8975
4 h after dark	2.10921	1.79842	2.42
8 h after dark	4.863195	4.55478	5.17161
12 h after dark	5.09451	4.85901	5.33001