When the term Cavok is used in an aviation routine weather report (METAR), the values of visibility and clouds are:
Visibility more than 5000 m, no clouds below 1500 m/GND.
Visibility 10 km or more, no clouds below 1500 feet/GND.
Visibility more than 8 km, no clouds below 3000 feet/GND.
Visibility 10 km or more, no clouds below 5000 feet/GND.