21 + 3 Side Bet

Hello all,

Thanks to all who have responded to my previous posts.

Today's question: Assuming a 9:1 payout (6 deck, dealer hits soft 17) for all 21 + 3 wins, does anyone know what the standard deviation is for the following:

1) Playing 21 + 3 by yourself.

2) Playing 2 hands of 21 + 3 simultaenously.

3) Playing 3 hands of 21 + 3 simultaneously.

4) Playing 4 hands of 21 + 3 simultaneously.

5) Playing 5 hands of 21 + 3 simultaneously.

Thank you in advance!