condition	mean	min	max
4 h after light	17.932650000000002	16.9096	18.9557
8 h after light	11.6616	11.5898	11.7334
12 h after light	7.73176	7.42529	8.03823
4 h after dark	8.993716666666666	8.50157	9.53226
8 h after dark	10.32746	9.67058	11.0021
12 h after dark	16.8829	15.451	19.1419