oO
°
N
6 May
/
1954
I5 May 1954
Sunrise at midpoint
FIELD STRENGTH
°
°
(MILLIVOLTS PER METER)
24 March 1954 ——————
27 April 1954
Sunset at midpoint
~
Sunset at midpoint
0000
0500
1000
1500
2000
2400
GREENWICH MEAN TIME
Figure 18
Plot of the field strength of NSS as measured by
FIELO STRENGTH (MILLIVOLTS PER METER)
DRL at Thule, Greenland.
24 March
0.20
1954
27 April 1954
6 May 1954
15 May 1954
i
0.10
ise at midpoint
Sunset at midpoint
0000
0500
1000
i§00
2000
2400
GREENWICH MEAN TIME
Figure 19 Plot of the field strength of NPM as measured by DRL
at Thule, Greenland.
37