condition	mean	min	max
0 h after light	5.64488	4.80711	6.48265
4 h after light	14.85135	13.7523	15.9504
8 h after light	18.7106	17.3773	20.0439
4 h after dark	11.5981	11.2116	11.9846
8 h after dark	15.27495	13.748	16.8019
12 h after dark	7.149604999999999	5.53921	8.76