This polygon was constructed from the GPS vertex positions using the NAD27 system and later re projected to WGS84. The original metadata reads: We are using the following GPS coordinates for the 480 m x 800 m rectangle (38.4-ha) encompassing the original 26.6-ha Gigante Fertilization Plot. The coordinates are based on the GPS location determined for position 210, 430 on the plot. Data were collected on 25 January 1998, using Pamela Philips’ rover while the base station at Tupper was simultaneously collecting data. Pamela Philips later differentially corrected the rover data against the base station data to provide us with this location. Easting and Northing are in UTMs. Pamela notes: UTM Zone 17, NAD 27.Since 210,430 is more-or-less near the centroid of the 38.4-ha rectangle, this will be used as the geo-referenced position of the Gigante Fertilization Project plot: 9 deg. 6 min. 30.71139 sec. N, 79 deg., 50 min., 36.89953 sec. W.

Polygon layer showing the Gigante fertilization plot localization. This polygon was generated from the GPS vertex positionsusin the NAD27 system and later reprojected to WGS84. The original metadata reads:We are using the following GPS coordinates for the 480 m x 800 m rectangle (38.4-ha) encompassing the original 26.6-ha Gigante Fertilization Plot. The coordinates are based on the GPS location determined for position 210, 430 on the plot. Data were collected on 25 January 1998, using Pamela Philips’ rover while the base station at Tupper was simultaneously collecting data. Pamela Philips later differentially corrected the rover data against the base station data to provide us with this location. Easting and Northing are in UTMs. Pamela notes: UTM Zone 17, NAD 27.Since 210,430 is more-or-less near the centroid of the 38.4-ha rectangle, this will be used as the geo-referenced position of the Gigante Fertilization Project plot: 9 deg. 6 min. 30.71139 sec. N, 79 deg., 50 min., 36.89953 sec. W.