90
75
60
45
30
Q)
15
"'0
::3
0
.....
.
-
.....
\0
~
0
~
-15
-30
-45
-60
-75
-90
0
30
60
90
120
150
180
210
240
270
300
330
o
Longitude
Fig. 1.
Location of the 95449 30'x30' mean free-air terrestrial anomalies in the DMA (Oct. 1995) database.