condition	mean	min	max
4 h after light	11.569713333333333	7.18044	14.8721
8 h after light	9.21911	2.89385	14.8581
12 h after light	9.47797	6.53081	11.3006
4 h after dark	16.212733333333333	13.5737	18.4705
8 h after dark	16.63093333333333	11.9868	19.2955
12 h after dark	15.5526	12.4169	17.4695