[x5,  y5]  = textread('9021_5.txt',  '%*u %u %u %*u', 'headerlines', 1);
[x10, y10] = textread('9021_10.txt', '%*u %u %u %*u', 'headerlines', 1);
[x6,  y6]  = textread('B20_A431_2min_6.txt', '%*n %n %n', 'headerlines', 1);
XYZ3 = load('threeD.csv');
x3 = XYZ3(:, 1);
y3 = XYZ3(:, 2);
z3 = XYZ3(:, 3);