@Yve65 - We all are inclined to believe there is a “normal” or “average” number for all things diabetic (Insulin:Carb ratios, Total Basal dosages, etc etc). The truth is even for identical T1D twins (same DNA, same size/weight/fitness levels), these numbers can and will vary dramatically.
The only number that all T1D’s should be mindful of is their target A1C. The closer to non-diabetic, the lower the risk of long term related health problems.