code_name,Cloud cover units,WMO code 2700 0,0 (ZERO) 1,1 OKTA OR LESS, BUT NOT ZERO (1/10 OR LESS, BUT NOT ZERO) 2,2 OKTAS 2/10-3/10 3,3 OKTAS 4/10 4,4 OKTAS 5/10 5,5 OKTAS 6/10 6,6 OKTAS 7/10-8/10 7,7 OKTAS OR MORE, BUT NOT 8 OKTAS (9/10 OR MORE, BUT NOT 10/10) 8,8 OKTAS 10/10 9,SKY OBSCURED, OR CLOUD AMOUNT CANNOT BE ESTIMATED