condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 3.25687 1.58858 4.92516 8 h after light 0.820065 0.0 1.64013 4 h after dark 0.79434 0.0 1.58868 8 h after dark 0.800115 0.0 1.60023 12 h after dark 0.787005 0.0 1.57401