condition	mean	min	max
4 h after light	8.773942000000002	8.248926	9.298958
8 h after light	8.5303135	8.175347	8.88528
12 h after light	8.454044	8.181785	8.726303
4 h after dark	8.281798	7.194713	9.368883
8 h after dark	10.460372499999998	8.89529	12.025455
12 h after dark	11.990201	11.990201	11.990201