condition	mean	min	max
4 h after light	8.5171	8.426919999999999	8.575389999999999
8 h after light	8.23181	8.17919	8.31931
12 h after light	9.146423333333333	9.02127	9.29877
4 h after dark	8.386206666666666	8.36289	8.41553
8 h after dark	8.45917	8.30841	8.60256
12 h after dark	8.468606666666666	8.4347	8.48665