The product contains zoning for the calculated degree of filling and groundwater situation from 1961 up to and including the previous Sunday. The calculations are made for areas corresponding to 4x4 km squares based on SMHI's grid for PTHBV within Sweden's borders. Filling rate and groundwater situation are different ways to describe the groundwater level in the conditions to levels at other times for the same site.
Each area has an ID, which is constructed from the area's row+column in a grid that covers the entire calculation area. In this API, the corresponding calculated levels, the whole time series from 1961 onwards, can be obtained per area. The API can also be called with a co-ordinate pair (n, e), however calculated levels are obtained for the area covering the co-ordinate in question. The product is also visualized in the map viewer for calculated levels.