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 0.00630445 0.0 0.0126089 8 h after dark 0.015461925 0.00622865 0.0246952 12 h after dark 0.01226415 0.0 0.0245283