condition	mean	min	max
4 h after light	7.68474	7.62925	7.77182
8 h after light	6.91228	6.755719999999999	7.12903
12 h after light	8.01448	7.82587	8.22396
4 h after dark	7.943906666666666	7.90002	8.028319999999999
8 h after dark	8.1891	7.96427	8.6248
12 h after dark	8.79623	8.5381	8.93125