There is no garantee that data are available for selected day.
The purpose of the MyOcean WP9 CalVal activities is to assess the quality of the Med_MFC external products,
e.g. daily mean temperature, salinity, sea level and current fields, in terms of MERSEA Class 4 diagnostics.
The Class 4 metrics aim to measure, using independent in-situ observations, the performance of the forecasting system,
its capability to describe the ocean (hindcast mode), as well as its forecasting skill (analysis and forecast mode).