data2.csv

0,12,8.6,12,25,13,24,17
12,0,7.9,5.1,13,18.1,12,26.9
8.6,7.9,0,6.5,20.9,19.5,18.5,19
12,5.1,6.5,0,15,13,12,23
25,13,20.9,15,0,23,4.7,33
13,18.1,19.5,13,23,0,19,10
24,12,18.5,12,4.7,19,0,29
17,26.9,19,23,33,10,29,0