Scouring Sandstone

304 9 x 0.002 = 60.818

0.002

295 92 x 0.002 = 59.184

0.002

1 87 x 0.316 = 59.092

0.316

248 82 x 0.002 = 49.764

0.002

208 5 x 0.002 = 41.61

0.002

66 x 0.629 = 41.514

0.629

205 34 x 0.002 = 41.068

0.002

181 70 x 0.002 = 36.34

0.002

175 5 x 0.002 = 35.01

0.002

0 x 0.002 = 0

0.002

x 0.08 = 0

0.08