RANGE UTG facing a 3Bet

RED = RAISE, GREEN = CALL, ORANGE (ex: KQs: RRRRC means: raise for 3Bet from HJ, CO, BU and SB, call for 3Bet from BB)

77 - FFCFF means:
fold for 3Bet from HJ and CO
call for 3Bet from BU
fold for 3Bet from SB and BB

Some comments and questions here:

1) Which format do you plan to apply this range to? Cash (6max or full ring), tournaments, sit&gos? This is crucial information as different formats bring different stack sizes and action.

2) how it comes that you have a5 and a4 in your range? Even planning to play them equal to the nuts?

3) why do you play more tight against a 3bet from BB compared with 3bet from MP or BU? Do you anticipate a wider range at MP and BU compared to BB after you have opened from UTG?

Looking forward to your inputs to get better understanding, discussing ranges is always beneficial to foster experience and understanding