Update README.md

README.md

@@ -26,7 +26,7 @@ A large-scale EO pretraining dataset with 18.7M aligned images covering all majo
 <!-- Provide a longer summary of what this dataset is. -->
 
 Copernicus-Pretrain contains 18.7M aligned imagery from all major Sentinel missions in operation (Sentinel-1 SAR, Sentinel-2 multispectral reflectance, Sentinel-3 multispectral radiance, and Sentinel-5P atmospheric variables), as well as an elevation product Copernicus DEM GLO-30.
-The images are organized into ~310K regional grids (0.25x0.25, consistent with ERA5), densely covering the whole land surface and near-land ocean with eight distinct Sentinel modalities.
+The images are organized into ~310K regional grids (0.25°x0.25°, consistent with ERA5), densely covering the whole land surface and near-land ocean with eight distinct Sentinel modalities.
 
 |     |  Modality            | GSD   | Image size            | # Grid cells | # Patches | # Timestamps | # Total images |
 |-----------|----------------------|-------|-----------------------|--------------|-----------|--------------|----------------|