HTCondorWiki: Details About Condor Stats

 |-ckptlist       | viewhist.4.* |
 |-ckptquery      | viewhist.4.* |
 
-The second number is the granularity of data.  The *.0 file is the highest sampling frequency but shortest period covered while the *.2 is the lowest sampling frequency but the longer period covered.  The *.1 files contain samples 1/4th as often as the *.0 files, while the *.2 files contain samples 1/4th as often as the *.1 files (or 1/16th as often as the *.0 files).
+The second number is the granularity of data.  The *.0 file is the highest sampling frequency but shortest period covered while the *.2 is the lowest sampling frequency but the longer period covered.  The *.0 file contains samples every 4*POOL_HISTORY_SAMPLING_INTERVAL seconds.  The *.1 files contain samples 1/4th as often as the *.0 files, while the *.2 files contain samples 1/4th as often as the *.1 files (or 1/16th as often as the *.0 files).
+
+As a given written sample represents at least 4 samples and as many as 64, the sub samples (taken every POOL_HISTORY_SAMPLING_INTERVAL seconds) are averaged together.  So a single entry in a *.0 file is the average of 4 samples, while a single entry in the *.2 file is the average of 64 samples.
 
 {subsection: File format}