Just giving the extension of .csv to a file does not automatically make it a csv file. Your file contains several alphabetic characters before the numeric values start. The following code will read the data as a text file and parse it to extract numeric values
f = fopen('position.csv');
data = textscan(f, '%s', 'HeaderLines', 11);
fclose(f);
str = [data{1}{:}];
idx = strfind(str, ':'); % finding the location of the last colon
values = sscanf(str(idx(end)+1:end), ',%f');
