Table 1. Number of GPS/levelling and first-order gravity data points in six sub-regions of Japan.
From: Towards an improvement of the geoid model in Japan by GOCE data: A case study of the Shikoku area
Data | Hokkaido | North Honshu | Central Honshu | West Honshu | Shikoku | Kyushu | Whole |
|---|---|---|---|---|---|---|---|
GPS/lev | 163 | 171 | 163 | 158 | 56 | 105 | 816 |
Gravity | 1,431 | 1,368 | 1,620 | 1,166 | 401 | 965 | 6,951 |