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 0.0 0.0 0.0 4 h after dark 0.1333035 0.0 0.266607 8 h after dark 0.267353 0.0 0.534706 12 h after dark 0.271094 0.0 0.542188