There is only one file type that uses the .TLO extension:
SPSS TableLooks File
Table definition file created by SPSS version 15 or earlier; saves the properties that define the appearance of an output data table; used for outputting analysis results with the same formatting.
NOTE: TLO files can only be opened by SPSS version 15 and earlier. SPSS versions 16 and later use the .STT extension for TableLooks.
Updated: October 17, 2011