Just realized that I made my first mistake! The last set of Plume data was using a spreadsheet with an error in it (minimum interval was set to high within a function from a previous calculation on a different geyser) that caused about 300 eruptions to be missed . I will be sending a new file out as soon as I redo the data. In the last file all times were correct but eruptions are missing. Will Boekel -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20121127/c25ed9f0/attachment.html>