adding column in log data

edited June 2016 in Android
Hi all,
time        x-rotation     y-rotation z-rotation
0 0.        004               -0.027     0.088
0.04       0.03              -0.023    0.076
0.08       0.011            -0.034    0.076
0.12       0.015            -0.038    0.072
0.16       0.027            -0.034    0.061
how can i add one more column in the log file save as cs.
this is the output 

now i want to add one more column which should retrieve data form a spinner or drop box, the moment button is pressed.
the drop box may co values like Freefall, Swing and stationary.

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