Reserved Values

The values -999, -888, -777 and -666 are reserved throughout the whole API. If you receive any of these values, the data is either not applicable or not available:

Value Meaning
-999: data is not available (this rarely occurs, if so, try another source)
-888: parameter specific reserved value (check the description of the corresponding parameter, e.g. sunset if the sun does not set at the queried location and time)
-777: parameter specific reserved value (check the description of the corresponding parameter, e.g. sunrise if the sun does not rise at the queried location and time)
-666: data not applicable (e.g. cloud top temperature if there are no clouds)

These invalid reserved values are plotted transparent in image formats.