Scouring Sandstone

439 99 x 0.002 = 87.998

0.002

403 63 x 0.002 = 80.726

0.002

317 70 x 0.002 = 63.54

0.002

1 87 x 0.316 = 59.092

0.316

235 60 x 0.002 = 47.12

0.002

221 56 x 0.002 = 44.312

0.002

209 68 x 0.002 = 41.936

0.002

66 x 0.629 = 41.514

0.629

187 33 x 0.002 = 37.466

0.002

0 x 0.002 = 0

0.002

x 0.08 = 0

0.08