The Geographical Survey Institute announced the standard gravity value measured at 122 locations nationwide in 1976. Since there were also large-scale crustal movements such as the Great East Japan Earthquake, we measured the results again at 263 locations nationwide and announced the results this time.
For example, in order to prevent gold, luxury beef, and difference in weight from becoming money difference, we correct the difference in gravity by place so that the same weight is measured everywhere on the earth That's right. For that purpose, what is decided for each region is "gravity value".
In any case, since it is about 1 hair difference, it does not seem necessary to worry too much.
