condition	mean	min	max
4 h after light	17.33935	15.0354	19.6433
8 h after light	8.93598	8.83721	9.03475
12 h after light	6.07993	6.07505	6.08481
4 h after dark	4.03379	3.40788	4.6597
8 h after dark	7.025665	6.40796	7.64337
12 h after dark	11.575099999999999	10.533	12.6172