Data are in Microsoft Excel spreadsheets (both .xlsx and .csv) and Tucson Decadal formatted files (.rwl), which can be read by a number of programs including MeasureJ2X, Tellervo, R, and text editors.
Type
Dataset
Date created
2012
Description
The dataset consists of nearly 200 tree cores from 11 different sites in northern and southern Illinois. Ring-widths were measured under magnification of a binocular microscope to the nearest 0.001 mm with a Velmex Unislide slide-stage micrometer interfaced with a computer and MeasureJ2X program.
Project conducted in 2012. Cores were collected in 1976 and 2008-2011.