Heating demand and available useful solar heat in different cities in the UK

The data contains three Excel documents with different return water temperatures at 30, 40 and 50 °C respectively. The calculated heating demands of dwellings in 8 different cities in the UK with different heat loss coefficients (50, 150 and 250 W/K) were given; The available useful solar heat from tilted flat-plate solar collector (30, 45, 60°C slope angle, facing south) were calculated and given.