Update README.md

README.md

@@ -6,7 +6,7 @@ size_categories:
 
 ## Dataset Details:
 
-Synoptic-Bench is used to train Vision-Language Models to generate text descriptions of weather forecast data. It contains 14,159 GFS forecasts spanning from 2016-2025 with lead times ranging from 3 hours to 168 hours in 3 hour intervals. Precipitation rate, 2-meter temperature, 850 mb zonal wind velocity, 850 mb meridional wind velocity, and 500mb geopotential height is included in the forecast data. There are 1,367,041 total Area Forecast Discussions (AFDs) matched to GFS forecasts.  
+Synoptic-Bench is used to train Vision-Language Models to generate text descriptions of weather forecast data. It contains 14,159 total GFS forecasts issued four times per day and spanning from 2016-2025 with lead times ranging from 3 hours to 168 hours in 3 hour intervals. Precipitation rate, 2-meter temperature, 850 mb zonal wind velocity, 850 mb meridional wind velocity, and 500mb geopotential height is included in the forecast data. There are 1,367,041 total Area Forecast Discussions (AFDs) matched to GFS forecasts.  
 
 ## Data Sources: