Rates is an average thing : experiment on my account

With my recent lucky pull on odin and all these false rates suspicion growing up, I did an experiment on my account :

I calculated the real and expected number of ur (new and old) I dropped since I came back on dark mael.

In total over 10 rotation + 3 multi on odin (so ~9k1 gemmes), I got :

New ur :

Real 8 ; Expected 9.1 ; STD 3

Old ur :

Real 30 : Expected 29 ; STD 5.3

(Numbers are rounded to the tenth)