Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.wdcb.ru/stp/data/ionosphere/NP-7/Readme.doc Дата изменения: Mon Jan 18 16:46:39 2010 Дата индексирования: Tue Oct 2 01:53:34 2012 Кодировка:

Hourly values of parameter foF2 ( F2 layer critical frequency )
are resulted.
The description of letters in the table is resulted
below.

DESCRIPTIVE Letters:
A blanketing.
B absorption.
C non-ionospheric (equipment).
D above upper frequency range of equipment.
E below lower frequency range of equipment.
F frequency spread.
G ionization density too small.
H stratification.
K particle E layer.
L no sufficiently defined cusp between F layers.
M mode uncertain.
N superimposed layers.
O measurement refers to o component.
P man-made perturbation of parameters.
Q range spread.
R attenuation near critical frequency.
S interference.
T interpolated.
V forked trace.
W above height range.
X measurement refers to x component.
Y lacuna (tilt).
Z measurement refers to z component.