PROC TRANSPOSE creates RADIO_TRANSPOSED. This data set contains the variable Listener from the original data set. It also contains two transposed variables: Timespan and Choice. Timespan contains the names of the variables (Time1-Time7) from the input data set that are transposed to form observations in the output data set. Choice contains the values of these variables. (See A Closer Look for a complete explanation of the PROC TRANSPOSE step.)
proc transpose data=radio
   by listener;
   var time1-time7;