condition	mean	min	max
4 h after light	16.928375	16.154611	17.702139
8 h after light	16.847226499999998	16.523099	17.171354
12 h after light	17.913123499999998	17.165725	18.660522
4 h after dark	17.233277	16.983624	17.48293
8 h after dark	15.390762	14.099415	16.682109
12 h after dark	16.027171	16.027171	16.027171