The SOR Scope wants data in ASCII, space delimited, CR is the end-of-line separator. It wants 1 to 16 values per line, so you can have as many or as few sensors as you want. If you're sending the data from the MCU then the time base is the time it receives the data. If you're playing back a file then the time base is... something arbitrary made so stuff doesn't move too fast
Playing back data is there for debuging purposes only, so no need for any kind of accurate time base.