Not a current picture of Comey in Iowa. Corn in Iowa is much higher than this.
https://crops.extension.iastate.edu/blog/rebecca-vittetoe/regional-update-crop-progress-and-update-june-5-june-13-2018
http://www.channel.com/agronomics/Documents/AgronomicContentPDF/GrowthStages%20GuidesChannel.pdf