condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 3.09708 2.08452 4.10964 8 h after dark 1.02066 0.0 2.04132 12 h after dark 0.0 0.0 0.0