Performance data will be inaccessible on Thursdays between 00:00 UTC and 03:30 UTC while the host data is being updated.
How DeltaMag Calculator works
DeltaCalculator uses publicly available performance data from all projects on the Gridcoin whitelist to find the top four computers on each project with the specified component. This is done using the Total Credit Delta (TCD) method. The change in a computers credit over the course of a week, relative to the increase in team credit over the same time period, is used to determine each computers magnitude.
More details are available on the Github page.