condition	mean	min	max
4 h after light	9.256225	6.99615	11.5163
8 h after light	14.7897	14.5364	15.043
12 h after light	17.36325	15.424	19.3025
4 h after dark	20.3604	18.9711	21.7497
8 h after dark	20.887900000000002	20.169	21.6068
12 h after dark	16.60335	15.6444	17.5623