Table 2
Typical Variations
Observatory Niemegk
February 2024
Part 1:
ssc, si, b
Day
U. T.
Phenomenon
Nature Quality
ssc, ssc*
si, si*
b, bp, bs, bps A,B,C
Sharp movement of
ssc, ssc*, si and si*
Exact time Sense
h m s±s X Y Z
b, bp, bs, bps
sense of the
chief movement
X Y Z
04
07
11
20
24
27
20:57
21:38
02:09
20:43
17:12
18:02
bp
bp
sc
bp
sc
bp
B
B
A
B
B
B
02 09 44 01 + - -
17 12 59 01 + - -
+ + -
+ + -
+ + -
+ + -
Part 2:
sfe
Day
Universal time of
begin maximum   end
Sense and maximum amplitude
X/nT Y/nT Z/nT
09
13:04
13:16
13:47
-15
-10
5
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Revised: Tue 05 Mar 2024