The image above also includes the option “Interpolate”. All weather parameters will then be interpolated to the set time definition. Down as far as hour definition, the parameters are interpolated using normal weather curves which determine how the gap between two completed values should be filled in. If there are cloudiness values, the cloudiness values will first be interpolated linearly, and the global radiation values will then be arrived at by each cloudiness value being converted to a corresponding global radiation value. However, existing global radiation values are not overwritten. If there are no cloudiness values, the global radiation column will instead be interpolated softly using the normal weather radiation. After these latter values on the forecast, the interpolated forecast will slowly approach normal weather until after 36 hours this coincides completely with the saved normal weather. (If cloudiness values have been specified, the cloudiness will instead approach the value 4 (partly cloudy) and global radiation will approach a corresponding converted value.)