| Height of the base of the highest layer of clouds covering more than half of the sky below 20000 ft |
| Height of the base of the lowest layer of clouds covering more than half of the sky below 10000 ft |
| Height of the base of the lowest layer of clouds covering more than half of the sky below 20000 ft |
| Altitude of the base of the lowest layer of clouds covering more than half of the sky below 20000 ft |
MENU
EN 
IT
ES
DE
FR
PL
CZ
RS
Exam Questions
Training Quiz
Exam simulation
PDF Exam
Contact Us
Prices
Are you a school?
App Mobile