condition	mean	min	max
4 h after light	17.824991	15.696853	19.953129
8 h after light	13.503336000000001	13.038127	13.968545
12 h after light	12.7053195	12.443457	12.967182
4 h after dark	15.093509000000001	14.971678	15.21534
8 h after dark	16.9384835	15.925235	17.951732
12 h after dark	11.921553	11.921553	11.921553