Hello all,

I'd like to drop the observations for "time" > -20 but < -5 and also for time > 5. (I'm only interested in comparing the deviation for the time period between -30 and -20, and also from 5 to -5). Ideally I would not want the observations to be erased from my dataset as I require them again to plot other graphs. Kindly help me generate the codes which can easily accomodate these requirements.

Thank you.