qûûüx1 x2 y %8.0g%12.%8.0g%12.%8.0g%12.x1 x2 low pollutionmoderate pollutionhouse pricexD(_S=;nKPÿÿ(ÿÿ7ÿÿIÿÿ-ÿÿ@2x1 ÿÿÿÿhighmoderatelow2x2  ÿÿÿÿhighlowmoderate