Update README.md

README.md

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 This dataset contains daily-collected weather forecasts for up to seven days ahead for all the meteorological observatories in Japan, published by the Japan Meteorological Agency (JMA) at [https://www.jma.go.jp/bosai/forecast/](https://www.jma.go.jp/bosai/forecast/). 
 We collect, structurize, and accumulate the prediction since the page is overridden whenever the information is updated. 
 
-The data is automatically updated daily using GitHub Actions. Since the actual forecasts are published in the multiple times a day, we set up the column `from_hour` which represetnts the announced time.
+The data is automatically updated daily using GitHub Actions. Since the actual forecasts are published multiple times a day, we set up the column `from_hour` which represetnts the announced time.
+
+Further details are also available at [note.com/jniimi/n/n06d3423bbbbf](https://note.com/jniimi/n/n06d3423bbbbf) (Japanese only). 
 
 ## Usage
-This dataset can be utilized across a wide range of research fields. While it is primarily valuable in the natural sciences, it can also be applied to social sciences, such as in studies of behavioral prediction. 
+This dataset can be utilized across a wide range of research fields. While it is primarily valuable in the natural sciences, it can also be applied to social sciences, such as the behavioral modeling and prediction. 
 
-You can refer the sample usage with following `open in colab` link: [weather_forecast_example.ipynb](https://colab.research.google.com/gist/jniimi/aaf3542f348ae1d2a94df62b7badff50/weather_forecast_example.ipynb). The actual code is hosted on Gist. Further details are available (Japanese only) at [https://note.com/jniimi/n/n06d3423bbbbf](https://note.com/jniimi/n/n06d3423bbbbf).
+You can refer the sample usage with following `open in colab` link: [weather_forecast_example.ipynb](https://colab.research.google.com/gist/jniimi/aaf3542f348ae1d2a94df62b7badff50/weather_forecast_example.ipynb), hosted on Gist. 
 
 ## Notes
-- All date and time variables are displayed in Japan Standard Time (JST).
+- No train-test split: All the data is contained in `train` section.
+- datetime in JST: All date and time variables are displayed in Japan Standard Time (JST: UTC+9).
 - To account for potential outliers (like disasters), all columns are stored as strings.
 - Please adhere to the original source's rules when using this data.
 - We do not take responsibility for any missing data or inaccuracies.
 
 ## Citation
-If you use this dataset for anything, please consider citing the following reference. Don't forget to mention JMA, also.
+If you use this dataset for anything, please consider citing (or displaying) the following reference. Don't forget to mention JMA, also.
 
 ```
 @misc{jniimi2024weather,