condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0783805 0.0 0.156761 12 h after light 0.0 0.0 0.0 4 h after dark 0.072187 0.0 0.216561 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0