condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.04006895 0.0 0.0801379 4 h after dark 0.11613055 0.0776241 0.154637 8 h after dark 0.0390942 0.0 0.0781884 12 h after dark 0.0769075 0.0 0.153815