Qatium simulates the behavior of each network using the EPANET toolkit, which can raise some errors while it is calculating and/or finishing the simulation process without returning the results for all the hours shown in the timeline.
In the hours when there are results, they will be shown in the map, in the asset details and in theme panels (pressure, flows, tank levels). But if in a selected time-step there are no available results, a “Simulation is not available” message will appear.