The Gari Index is a prediction of the user's "Gari-Gari-kun" based on the weather forecast data of each region. There are 4 levels of gully index, and if the heat is such that even one gully can survive, it will rise to "1 gully", then 2 gully and 3 gully, and the 4th step will be "box gully" at once. The gully index is updated twice daily in the morning and evening, and every Friday, the "two-week gully index" is also announced as a preliminary forecast.
In addition, the weather forecast updated three times a day and the highest temperature ranking of the day are also displayed.
The site's dedicated Twitter account, "gariten," delivers comments on heat measures by the "weather manager," who plays the role of a weather forecaster, and the current "Gari index."