Sample #

Cumulative Etching Time

(Hrs.)

Final Volume (Etched Area)

(×10⁶ µm³)

Baseline Volume (Unetched Area)

(×10⁵ µm³)

Volume Removed (Final-Baseline)

(×10⁵ µm³)

2

1.5

3.027

2.357

27.913

10

7.5

2.328

2.452

20.828

20

15

1.313

2.689

10.441