condition	mean	min	max
4 h after light	11.271104999999999	9.48041	13.0618
8 h after light	12.1079	11.9548	12.261
12 h after light	18.40045	17.3859	19.415
4 h after dark	19.574566666666666	18.7154	20.5974
8 h after dark	17.9447	16.9215	18.5016
12 h after dark	15.147	15.0816	15.2226