condition	mean	min	max
4 h after light	21.3371095	18.146042	24.528177
8 h after light	23.345694	22.890107	23.801281
12 h after light	18.616397	17.39637	19.836424
4 h after dark	15.9227305	14.449091	17.39637
8 h after dark	13.4165855	11.848965	14.984206
12 h after dark	12.492802	12.492802	12.492802