Overgo probe data.

See more information here: https://maizegdb.org/data_center/overgo
and here: https://www.ncbi.nlm.nih.gov/probe/docs/techovergo/

Reference:
Anchoring 9,371 Maize Expressed Sequence Tagged Unigenes to the 
Bacterial Artificial Chromosome Contig Map by Two-Dimensional 
Overgo Hybridization.
Jack Gardiner, Steven Schroeder, Mary L. Polacco, Hector 
Sanchez-Villeda, Zhiwei Fang, Michele Morgante, Tim Landewe, 
Kevin Fengler, Francisco Useche, Michael Hanafey, Scott Tingey, 
Hugh Chou, Rod Wing, Carol Soderlund, Edward H. Coe
Plant Physiology, April 2004, Vol. 134, pp. 1317–1326
DOI: 10.1104/pp.103.034538