condition	mean	min	max
4 h after light	18.178904000000003	16.627216	19.730592
8 h after light	19.2671385	18.671309	19.862968
12 h after light	20.507917	17.456259	23.559575
4 h after dark	22.0248055	20.200018	23.849593
8 h after dark	32.293477	29.447529	35.139425
12 h after dark	20.335061	20.335061	20.335061