This example dataset is a set of APSIM simulations of wheat grain N (grams per squared meter), which presents both high accuracy and high precision. The experimental trials come from 11 site-years in 4 countries (Australia, Ethiopia, New Zealand, and Turkey). These data correspond to the latest, up-to-date, documentation and validation of version number 2020.03.27.4956. Data available at: doi:10.7910/DVN/EJS4M0 . Further details can be found at the official APSIM Next Generation website: https://APSIMnextgeneration.netlify.app/modeldocumentation/