condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.21985 0.0 0.4397 8 h after light 0.2206085 0.0 0.441217 4 h after dark 0.2189985 0.0 0.437997 8 h after dark 0.2196115 0.0 0.439223 12 h after dark 0.0 0.0 0.0