This child item contains information about associating the calibration images and video to real-world distances using ground control points for each field site. The data included here can be used to provide a pixel ground scale distance for each video. <br> Each Field Site is abbreviated in various files in this data release. File and folder names quickly identify which site a particular file or dataset represents. The following abbreviations are used: <ul> <li>ACS: Anthracite Creek at Somerset, Colorado, USA</li> <li>BRA: Blue River below Dillon, Colorado, USA (collected in August 2023)</li> <li>BRJ: Blue River below Dillon, Colorado, USA (collected in June 2023)</li> <li>CRG: Colorado River below Glenwood Springs, Colorado, USA</li> <li>CRR: Colorado River above Roaring Fork River at Glenwood Springs, Colorado, USA</li> <li>MCA: Maroon Creek near Aspen, Colorado, USA</li> </ul>