1. With new systematics: Horn 1 shift 1mm Horn 1 angle 0.2mr Horn current ±1%

2.  Ratios versus E true

3.  Ratios versus E reco

4.  Ratios versus E true

5.  Ratios versus E reco

6. With old systematics: Horn 1 shift 4mm Horn 1 angle 0.4mr Horn current ±2%

7.  Ratios versus E true

8.  The obtained ratios for the antineutrinos with hadron parents are:  The ratios are smoothed due to lack of statistics. LE-10 pHE

9.  Ratios versus E true

10. LE-10 pHE  But also have to consider effect on antineutrinos with muon parents:  Large effect !  + ’s depend directly on focusing.