condition	mean	min	max
4 h after light	15.35915	15.0259	15.6924
8 h after light	9.884165	9.79014	9.97819
12 h after light	8.22674	7.9433	8.51018
4 h after dark	12.72295	11.7086	13.7373
8 h after dark	17.213949999999997	16.8312	17.5967
12 h after dark	17.029449999999997	16.3176	17.7413