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 0.0266872 0.0 0.0533744 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0077175 0.0 0.015435 12 h after dark 0.0 0.0 0.0