condition	mean	min	max
4 h after light	5.820235	5.36848	6.27199
8 h after light	13.924949999999999	12.3471	15.5028
12 h after light	16.891550000000002	16.6219	17.1612
4 h after dark	18.811300000000003	17.7772	19.8454
8 h after dark	16.195	15.7996	16.5904
12 h after dark	11.059825	9.70545	12.4142