i2 question

Hi,
do logged Knock1/Knock2/Knock3/Knock4 indicate cylinders #1/#2/#3/#4, or in firing order (for example cylinders 1-3-4-2)?
Thanks
do logged Knock1/Knock2/Knock3/Knock4 indicate cylinders #1/#2/#3/#4, or in firing order (for example cylinders 1-3-4-2)?
Thanks