condition	mean	min	max
0 h after light	21.25575	21.0142	21.4973
4 h after light	8.065985	7.30726	8.82471
8 h after light	4.91003	4.84009	4.97997
4 h after dark	8.260185	7.94823	8.57214
8 h after dark	11.99025	11.0052	12.9753
12 h after dark	14.965	12.2196	17.7104