condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.09806545 0.0533169 0.142814 12 h after light 0.04318715 0.0 0.0863743 4 h after dark 0.057738 0.0 0.115476 8 h after dark 0.2551895 0.171131 0.339248 12 h after dark 0.079801 0.047283 0.112319