condition	mean	min	max
4 h after light	4.008923333333334	3.91874	4.1623
8 h after light	4.02105	3.97724	4.04415
12 h after light	4.029953333333333	3.8782099999999997	4.2476199999999995
4 h after dark	4.024473333333333	3.9407900000000002	4.0912
8 h after dark	3.958946666666667	3.88881	4.03859
12 h after dark	4.03918	3.98049	4.1455