condition mean min max 4 h after light 0.03807345 0.0 0.0761469 8 h after light 0.0346899 0.0 0.0693798 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0