Table 1.3 1998 Base line values of the digital system 
32 
Wingst 1998 
Base-line measurements, system FGE125, IMS 
Do(abs) 
Do(rei) 
Io 
Fo 
Ho 
Zo 
C 
E 
Month 
day 
nT 
nT 
nT 
nT 
Jan. 
7 
-0 
°17.93 1 
48959.1 
18027.2 
45519.1 
+ 0.3 
14 
-0 
18.05 
48959.0 
18027.4 
45518.9 
+ 0.3 
22 
-0 
o 
I- 1 
CO 
o 
CO 
-0 
18.06 
+ 68 
° 2 3.71 1 
48958.6 
18026.6 
45518.9 
+ 0.2 
+ 0 . 00 
28 
-0 
18.00 
48958.9 
18027.1 
45518.9 
+ 0.3 
Feb. 
4 
-0 
18.14 
48959.5 
18028.7 
45519.0 
+ 0.2 
11 
-0 
18.26 
48959.2 
18026.8 
45519.4 
+ 0.2 
18 
-0 
18.09 
48959.1 
18027.2 
45519.1 
+ 0.3 
25 
-0 
18.26 
48958.9 
18026.6 
45519.1 
+ 0.3 
March 
3 
-0 
18.11 
-0 
18.12 
+ 68 
23.65 
48959.2 
18027.5 
45519.1 
+ 0.2 
-0.01 
12 
-0 
18.01 
48959.8 
18028.2 
45519.5 
+ 0.2 
18 
-0 
17.95 
48959.0 
18027.2 
45519.0 
+ 0.2 
25 
-0 
17.95 
48959.1 
18027.1 
45519.2 
+ 0.2 
April 
1 
-0 
17.79 
48958.9 
18027.8 
45518.7 
+ 0.2 
8 
-0 
17.78 
48959.3 
18027.0 
45519.4 
+ 0.3 
15 
-0 
17.61 
-0 
18.08 
+ 68 
23.65 
48958.2 
18027.1 
45518.2 
+ 0.2 
-0.01 
23 
-0 
18.01 
48959.2 
18028.3 
45518.8 
+ 0.2 
29 
-0 
17.78 
48958.8 
18027.2 
45518.8 
+ 0.2 
May 
6 
-0 
17.87 
48959.3 
18027.5 
45519.2 
+ 0.3 
19 
-0 
17.86 
48959.5 
18027.4 
45519.2 
+ 0.5 
27 
-0 
17.88 
-0 
17.91 
+ 68 
23.61 
48959.1 
18027.7 
45518.7 
+ 0.4 
-0.03 
June 
3 
-0 
17.93 
48959.4 
18026.9 
45519.1 
+ 0.7 
11 
-0 
18.23 
48958.4 
18027.6 
45518.7 
-0.2 
17 
-0 
17.99 
48959.1 
18028.1 
45518.9 
+ 0.1 
24 
-0 
17.92 
-0 
18.04 
+ 68 
23.67 
48959.1 
18026.4 
45518.9 
+ 0.7 
-0.06 
July 
1 
-0 
17.85 
48959.3 
18027.6 
45518.7 
+ 0.7 
8 
-0 
17.87 
48959.3 
18026.5 
45518.9 
+ 0.9 
16 
-0 
17.88 
48959.2 
18027.3 
45518.7 
+ 0.7 
22 
-0 
18.22 
-0 
18.02 
+ 68 
23.57 
48958.9 
18027.1 
45518.1 
+ 1.0 
-0.09 
29 
-0 
17.78 
48959.3 
18027.0 
45518.7 
+ 0.9 
Aug. 
5 
-0 
17.85 
48958.8 
18027.4 
45518.2 
+ 0.7 
12 
-0 
17.95 
48959.2 
18027.9 
45518.3 
+ 0.8 
19 
-0 
17.88 
-0 
17.96 
+ 68 
23.61 
48959.0 
18027.5 
45518.5 
+ 0.6 
-0.03 
26 
-0 
17.88 
48959.3 
18028.0 
45518.8 
+ 0.4 
Sep. 
3 
-0 
17.53 
48959.0 
18026.9 
45518.4 
+ 0.9 
9 
-0 
17.74 
48959.0 
18028.1 
45518.3 
+ 0.6 
17 
-0 
17.73 
48959.6 
18027.4 
45518.4 
+ 1.3 
23 
-0 
17.76 
48959.1 
18027.1 
45518.1 
+ 1.2 
30 
-0 
17.63 
48959.1 
18027.2 
45518.2 
+ 1.1 
Oct. 
8 
-0 
17.58 
48959.4 
18027.8 
45518.6 
+ 0.8 
14 
-0 
17.71 
-0 
17.83 
+ 68 
23.81 
48959.6 
18028.8 
45518.3 
+ 0.9 
+ 0.26 
21 
-0 
17.72 
48959.3 
18027.8 
45518.4 
+ 0.9 
29 
-0 
17.67 
48959.5 
18028.0 
45518.3 
+ 1.1 
Nov. 
5 
-0 
17.80 
48959.2 
18028.4 
45518.9 
+ 0.1 
11 
-0 
17.63 
-0 
17.54 
+ 68 
23.65 
48959.6 
18027.9 
45518.7 
+ 0.9 
+ 0 . 03 
18 
-0 
17.51 
48959.3 
18026.7 
45518.9 
+ 0.8 
25 
-0 
17.64 
48959.8 
18028.8 
45518.6 
+ 0.8 
Dec. 
2 
-0 
17.69 
48959.7 
18028.5 
45519.0 
+ 0.5 
9 
-0 
17.79 
-0 
17.26 
+ 68 
23.58 
48959.6 
18027.8 
45518.7 
+ 0.9 
-0.05 
16 
-0 
17.88 
48960.1 
18027.2 
45519.5 
+ 0.9 
23 
-0 
17.68 
48960.4 
18027.8 
45519.5 
+ 1.0 
29 
-0 
17.49 
48960.2 
18028.1 
45519.5 
+ 0.7