Hello everyone

I am not able to understand how did they solve this question?

This is the answer to question 11 -

A hurdle rate of 5% per year equates to a monthly hurdle rate of 5%/12 = 0.4167%. The downside deviation for the hedge fund = √28.78/(12−1)×√12=5.60%. The downside deviation for the index = √65.04/(12−1)×√12=8.42%.

How do you come up with 28.78 and 65.04? Annualized return for the hedge fund = 0.6133% × 12 = 7.360%. Annualized return for the index = –0.449% × 12 = –5.388%. The Sortino ratio for the hedge fund = (7.36 – 5)/5.6 = 0.42. The Sortino ratio for the index = (–5.39 – 5)/8.42 = –1.23.

How do you come up with 0.6133% and -0.499%???