condition	mean	min	max
0 h after light	9.62238	9.51097	9.73379
4 h after light	5.5746	5.56334	5.58586
8 h after light	5.75789	5.70736	5.80842
4 h after dark	7.74358	6.80393	8.68323
8 h after dark	6.937475	6.64723	7.22772
12 h after dark	8.156535	7.28392	9.02915