I have a data file named roof-disp.out attached below. 1st column data refers to time and all other columns refers the corresponding distance. Now I want to extract the data for 0.02,0.04,0.06,...60.00 sec (at a difference of 0.02) from 1st column and corresponding distances. Is there a way to extract data from the original data for a particular values? Your answer is highly appreciated. Thank you.