20 ppm(3) 22 ppm(3) 23 ppm(1) 29 ppm(1) 30 ppm(7) 32 ppm(5) 33 ppm(4) 34 ppm(4) 35 ppm(3) 36 ppm(2) 39 ppm(3) 40 ppm(14) 43 ppm(2) 44 ppm(2) 47 ppm(2) 48 ppm(3) 50 ppm(4) 61 ppm(3) 71 ppm(2)