Update README.md

README.md

@@ -177,12 +177,12 @@ The rationale and methodologies employed in each step are discussed comprehensiv
 
 ### Testing Data
 
-<!-- This should link to a Data Card if possible. -->
-The dataset used is a composition of the ERA5 and CERRA reanalysis.
+In terms of spatial dimensions, both the input grids from ERA5 and the target high-resolution grids from CERRA remain consistent throughout the training and testing phases.
+This spatial consistency ensures that the model is evaluated under the same geographic conditions as it was trained, allowing for a direct comparison of its performance 
+across different temporal segments.
 
-The spatial coverage of the input grids (ERA5) and the target high-resolution grids (CERRA) is fixed for both training and testing.
-
-The data samples used for testing corresponds to the period from 2018 to 2020 (both included).
+The testing data samples correspond to the three-year period from 2018 to 2020, inclusive. This segment is crucial for assessing the model's real-world applicability and 
+its performance on the most recent data points, ensuring its relevance and reliability in current and future scenarios.
 
 
 ### Factors