condition	mean	min	max
0 h after light	5.97149	5.80226	6.14072
4 h after light	5.36708	4.91359	5.82057
8 h after light	14.05585	13.224	14.8877
4 h after dark	18.691000000000003	16.155	21.227
8 h after dark	10.739965000000002	9.46343	12.0165
12 h after dark	6.79788	6.12701	7.46875