Chapter 12: The hardness on 25 samples of four titanium buttons.

Col 1: Sample number
Cols 2-5 Hardness readings

1       125.8  128.4  129.0  121.0
2       125.2  127.0  130.4  124.6
3       121.8  126.8  127.0  129.8
4       131.0  130.0  127.2  127.0
5       128.6  122.8  125.4  126.4
6       122.0  123.8  131.2  121.8
7       122.8  129.8  126.2  128.8
8       120.2  130.0  125.6  144.0
9       124.8  123.8  130.2  128.8  
10      127.0  126.4  122.2  129.0
11      131.8  127.6  123.8  123.2
12      129.8  125.6  128.2  127.6
13      127.6  125.6  128.2  126.8
14      124.2  122.8  124.8  124.6
15      125.4  129.4  123.6  127.2
16      130.8  122.8  125.4  126.2
17      127.4  131.0  123.0  122.8
18      124.8  122.6  122.8  123.6
19      123.8  130.0  128.4  130.0
20      128.8  141.2  138.8  136.2
21      126.4  123.8  128.8  129.6
22      130.8  127.4  126.0  125.2
23      129.6  128.4  123.2  125.8
24      124.4  127.0  130.0  122.8
25      129.2  126.2  128.0  123.2