Collected over 20 years. Includes two Scientific projects, explicit functions: 1. Kirby2 ... Scanning electron microscope line width standards. 2. Carbon alpha 12 Raw experimental data may not be usable as is. First, sanity check for duplicates/multiplicates [X,Y] Check their existence range. At this point, the other surprise is about modelling. Long range experiments may not respond to a single DE, that means more than a unique model. Example: Atmospheric kPa/m altitude in 3 models Take care ... add more ... Jean.