condition	mean	min	max
4 h after light	19.519550000000002	18.2143	20.8248
8 h after light	12.159400000000002	11.6003	12.7185
12 h after light	8.78411	7.23072	10.3375
4 h after dark	12.966333333333333	12.1694	13.4167
8 h after dark	12.474893333333334	9.67308	14.5896
12 h after dark	18.227533333333334	14.3524	24.6174