CV-Helios Network CV-USAF project

Purpose:
The CV-USAF project was established in 2003,
in order to study and compare the work of classifications
observed by CV-Helios Network from August 1981 until present
with Joint NOAA/USAF observational data performed from October 1966 until present.

Frequency for all 60 Z/McI-classifications

FREQUENCY FOR EACH CLASSIFICATION, ALL LETTERS

	1st Letter		2nd Letter		3rd Letter
A		x		x
B		r		o
C		a		i
D		s		c
E		k
F		h
H

29.07.2018