Error in loading data

Hi all,

I am a new user of Matlab. I got an error message when I haven't got before. I have an atmospheric data contains altitude, density, and temperature. I write the data in the script. All these data are numerical.

This is part of the data I can show: 0 288.2 1.225 1000 281.7 1.112 2000 275.2 1.007

I use this data more than 10 times and it works just fine. However, today I got an error message saying that "Parse error at '288.2': usage might be invalid MATLAB syntax", all over the number in the second column (288.2,281.7,and 275.2, so on.

I don't understand what really happened because I think the data was okay. worse, I can't run any functions as these data is inputs for all variables in the function. I already recreate the script but it's still fail.

I hope someone could help me figure this out.

Thank you