Usually the ST03 summarize all data from STAD, so, if it exist in the STAD you should be able to see in the ST03 the average data (note that the ST03 is only to statistics purpose).
If you want a more accurate number of RFC steps you can increase stat/rfcrec.
The parameter stat/rfcrec is the number of rfc statistic records created
for every step as described in note 552845 point 11.
Regards
Clebio