condition	mean	min	max
4 h after light	15.993834499999998	15.505517	16.482152
8 h after light	19.0740515	16.482152	21.665951
12 h after light	15.097031	14.211882	15.98218
4 h after dark	12.306369	12.196503	12.416235
8 h after dark	13.1545045	11.593853	14.715156
12 h after dark	16.881069	16.881069	16.881069