condition	mean	min	max
4 h after light	15.943683	15.485468	16.401898
8 h after light	17.335192499999998	16.924862	17.745523
12 h after light	16.825282	13.70802	19.942544
4 h after dark	16.747203	14.811406	18.683
8 h after dark	16.1002375	14.087799	18.112676
12 h after dark	18.029258	18.029258	18.029258