condition	mean	min	max
4 h after light	18.0020775	16.606474	19.397681
8 h after light	13.698342	12.283855	15.112829
12 h after light	16.252172	14.545692	17.958652
4 h after dark	16.930660500000002	16.284337	17.576984
8 h after dark	23.631098	18.512956	28.74924
12 h after dark	18.614093	18.614093	18.614093