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Postfix: Variable meanings table

Can someone tell me how I can get the meaning of these variables
(ehlo..commands) in the postfix log?
i.e:
1) disconnect from xxxx.xxxx.xx [99.99.999.99] ehlo= 2 starttls= 1 mail=1
rcpt=1 data=1 quit=1 commands=7
2) disconnect from xxxx.xxxx.xx [99.99.999.99] ehlo=2 starttls=1 mail=1
rcpt=0/1 data=0/1 rset=1 quit=1 commands=6/8

Thank you very much!!