condition	mean	min	max
0 h after light	18.80805	17.9108	19.7053
4 h after light	11.6674	11.2963	12.0385
8 h after light	10.475010000000001	8.92352	12.0265
4 h after dark	15.3213	13.5869	17.0557
8 h after dark	14.50505	14.0229	14.9872
12 h after dark	16.94425	14.668	19.2205