CTL and ATL are components of rolling TSS/day (2x your set constant), so any differences in CTL are likely happening in TSS. If you're seeing different CTL and ATL numbers between WKO4 and TrainingPeaks, here are a few things you can check to find out why.
- Check the athlete's set FTP. You'll need to manually record the FTP history for each athlete and ensure it generally matches the settings in TrainingPeaks. This can be reviewed/completed on the Athlete Details tab.
- If the FTP matches, the next step is to check the daily IF in WKO4 against TrainingPeaks. The TSS & IF Chart makes this simple to do. WKO4 calculates Normalized Power in a slightly cleaner way, so it might be 1-2% off from the NP reported in TrainingPeaks, but it should be close. If you find a time range where these are more than slightly off, check the FTP setting again for that time period.
- Check the sport type that's selected. Make sure you have all sport types selected in the top right selection tool, as these may cause your CTL and ATL to reflect only files of the selected sport types in some charts (though many charts are built to include only the specific sport they're reporting).
- Check to make sure the athlete's CTL and ATL constants match between WKO4 and the charts in TrainingPeaks.com. To see the constants in WKO4, simply click on the numbers in the Hero Bar (as shown below).