Update README.md

README.md

@@ -33,7 +33,7 @@ The dataset is structured for machine learning experiments, particularly in this
 
 ### Data Files
 
-- `train.csv`: Instances from all other days in each year between 2010–2019  
+- `train.csv`: Instances from Feb 15 to Dec 31 in each year between 2010–2019  
 - `validation.csv`: Instances from Jan 15–28 of each year between 2010–2019  
 - `test.csv`: All instances from each year between 2020–2024  
 - `leaky_validation.csv`: Instances from Jan 1–14 and Jan 29–Feb 11 of each year between 2010–2019