MATLAB: Hi guys, Could you help me with this question where I cant read the .txt file for the first two column

dlmread problem

I wrote this command: D = dlmread('Argon.txt','\t',[0 0 10 1]) but some reason I dont know why it keep saying there is an error. Is there any problem with my code?
Error using dlmread (line 147) Mismatch between file and format character vector. Trouble reading 'Numeric' field from file (row number 1, field number 3) ==> C 0 1 \n
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