Hi Rick,
I have "checked" the data in two ways:
1. I have used 3dinfo TS_2_1+orig and looked at the range reported for each sub-brick. There is not one sub-brick that contains a decimal value in it's range. The numbers are like "0 to 380" and "0 to 348".
2. I have opened the afni viewer and selected TS_2_1+orig as the anatomy, then opened the graph window. I have moved through the timeseries of several different voxels and looked at the bottom of the window where the "value" is reported for each time point in the time series. I can not find one example, from the dozens and dozens of time point values I have searched through, that shows up with a decimal, they are all whole numbers. The numbers are like "162" and "234".