[squid-users] Squid result codes

[Ilya]

Hello! I am creating scripts which analyze access.log and 
fetch the amount of data ("bytes" field) downloaded by a user. 
Does this field always contain the number of bytes which were 
got from the Internet? Or it depends on the "Squid result 
codes" (TCP_MISS, TCP_HIT, etc)? For ex, if we have the log 
line with the code TCP_HIT and the "bytes" field is equal to 
1000, then what does it number (1000) mean? Were that 1000 
bytes really got from the Internet? 

wbr,
Ilya