ArcMap - Joining Excel File with ArcMap - NULL Error

Discussion created by ruggs87 on Apr 12, 2011
Latest reply on Apr 18, 2011 by timothy_hales-esristaff
If anyone could please help I would greatly appreciate it!

I am currently working on a research assignment for my GIS Course. I am trying to join a data table from Microsoft Excel with Data  Layer of Illinois. I can get some of the table to link but only for the 102 counties in Illinois; not the entire 821 tornado events that I am trying to map. I have attached my excel file for anyone who wants to try it. Thanks for any help!!