[Comments]
All the comments are by  conveners.
- Why are only odd order cumulants differ to ~15%, whether average or separate efficiency??
-- Verify by hand calculation at next PWG meeting (whoever, Nu said)
- Why is the difference between average and separate efficiency correction for "Sσ/skellam" so small (page11), even though the difference of odd order cumulants is ~15% (page6)
- Redo the estimation in page6, including C3/C2 and C4/C2