condition	mean	min	max
4 h after light	3.1308749999999996	2.65115	3.6106
8 h after light	7.652839999999999	7.31327	7.99241
12 h after light	15.724	12.2267	19.2213
4 h after dark	9.518295	7.91969	11.1169
8 h after dark	7.65081	7.38328	7.91834
12 h after dark	3.66632	3.38938	3.94326