condition	mean	min	max
0 h after light	5.087065	4.5408	5.63333
4 h after light	12.47615	10.1894	14.7629
8 h after light	21.82875	19.3788	24.2787
4 h after dark	4.495705	4.28091	4.7105
8 h after dark	4.99432	4.92252	5.06612
12 h after dark	5.25991	4.26495	6.25487