calling req for SB in 6max?

[Durer]

What determines your calling requirements from the small blind in a 6max game and what range does it usually add up to? Also, do you have any info on how succesful it has been in terms of PT-stats? If there is anything more you would like to add for example any strategic advice for common situations in the sb or something please feel free to fill in. Sorry if it a bit wide question / thanks in advance