condition	mean	min	max
4 h after light	8.163505	7.68658	8.64043
8 h after light	7.80335	7.36256	8.24414
12 h after light	7.398845	6.78086	8.01683
4 h after dark	10.62665	8.6266	12.6267
8 h after dark	10.126685	9.59977	10.6536
12 h after dark	11.6181	11.569	11.6672