condition	mean	min	max
0 h after light	7.8685849999999995	7.58416	8.15301
4 h after light	4.1904900000000005	3.93114	4.44984
8 h after light	5.43412	4.89064	5.9776
4 h after dark	7.62891	7.5365	7.72132
8 h after dark	6.19225	6.02228	6.36222
12 h after dark	5.715275	5.67036	5.76019