condition	mean	min	max
4 h after light	17.6539	17.0001	18.3077
8 h after light	16.820149999999998	16.7848	16.8555
12 h after light	17.20815	16.8335	17.5828
4 h after dark	21.82205	20.4436	23.2005
8 h after dark	19.02265	17.1002	20.9451
12 h after dark	20.4433	20.083	20.8036