Table 1.2 1997 Base line values of the digital system 
31 
Wingst 1997 
Base-line measurements, system FGE125, IMS 
Do(abs) 
Do(rei) 
Io 
Fo 
Ho 
Zo 
C 
E 
Month 
day 
nT 
nT 
nT 
nT 
Jan. 
8 
-0 
° 18.31 1 
48957.6 
18025.4 
45518.0 
+ 0.4 
15 
-0 
18.40 
48958.8 
18025.5 
45519.3 
+ 0.4 
22 
-0 
°18.45 1 
-0 
18.41 
+ 68 
° 2 3.79 1 
48958.8 
18025.4 
45519.1 
+ 0.6 
-0.01 
29 
-0 
18.43 
48958.8 
18025.5 
45519.2 
+ 0.5 
Feb. 
6 
-0 
18.11 
48958.3 
18025.1 
45518.9 
+ 0.4 
12 
-0 
18.41 
48958.8 
18024.9 
45519.2 
+ 0.7 
15 
-0 
18.63 
48957.3 
18025.2 
45517.6 
+ 0.6 
18 
-0 
18.67 
-0 
18.34 
+ 68 
23.76 
48958.1 
18025.9 
45518.5 
+ 0.3 
+ 0 . 01 
26 
-0 
18.32 
48958.8 
18025.2 
45519.3 
+ 0.5 
March 
5 
-0 
18.33 
48958.5 
18025.1 
45518.9 
+ 0.6 
12 
-0 
18.38 
48957.9 
18024.6 
45518.4 
+ 0.7 
19 
-0 
18.33 
48958.3 
18024.6 
45518.6 
+ 0.9 
26 
-0 
18.32 
48957.9 
18025.4 
45518.2 
+ 0.6 
April 
2 
-0 
18.21 
-0 
18.34 
+ 68 
23.80 
48958.0 
18025.1 
45518.7 
+ 0.3 
-0.01 
8 
-0 
18.38 
48958.2 
18024.9 
45518.6 
+ 0.7 
23 
-0 
18.45 
48958.0 
18025.0 
45519.0 
+ 0.1 
29 
-0 
18.37 
-0 
18.31 
+ 68 
23.75 
48958.3 
18025.5 
45519.1 
+ 0.1 
-0.04 
May 
7 
-0 
18.42 
48957.5 
18026.1 
45518.0 
+ 0.1 
14 
-0 
18.37 
48957.6 
18025.4 
45518.4 
+ 0.1 
21 
-0 
18.27 
48957.6 
18026.1 
45518.1 
+ 0.1 
28 
-0 
18.40 
48957.9 
18026.0 
45518.6 
+ 0 . 0 
June 
4 
-0 
18.33 
-0 
18.29 
+ 68 
23.73 
48957.5 
18025.1 
45518.4 
+ 0.1 
-0.07 
11 
-0 
18.43 
48957.5 
18025.8 
45518.1 
+ 0.1 
18 
-0 
18.42 
48957.6 
18026.1 
45518.2 
+ 0 . 0 
25 
-0 
18.39 
48957.4 
18025.3 
45518.3 
+ 0 . 0 
July 
2 
-0 
18.34 
48957.7 
18026.0 
45518.3 
+ 0 . 0 
9 
-0 
18.68 
-0 
18.31 
+ 68 
23.71 
48957.3 
18026.4 
45517.7 
+ 0.1 
+ 0 . 01 
16 
-0 
18.36 
48957.5 
18026.3 
45517.9 
+ 0.1 
23 
-0 
18.40 
48958.0 
18025.5 
45518.9 
+ 0 . 0 
30 
-0 
18.34 
48957.5 
18025.5 
45518.3 
+ 0 . 0 
Aug. 
6 
-0 
18.42 
-0 
18.60 
+ 68 
23.64 
48957.8 
18026.1 
45518.3 
+ 0.1 
-0.09 
13 
-0 
18.33 
48958.5 
18026.8 
45518.8 
+ 0.1 
20 
-0 
18.55 
48957.5 
18025.3 
45518.4 
+ 0 . 0 
27 
-0 
18.15 
+ 68 
23.71 
99999.9 
99999.9 
99999.9 
28 
-0 
18.59 
48957.5 
18026.0 
45518.1 
+ 0 . 0 
Sep. 
3 
-0 
18.17 
48958.0 
18025.4 
45518.8 
+ 0.1 
10 
-0 
18.36 
-0 
18.48 
+ 68 
23.80 
48957.8 
18025.3 
45518.7 
+ 0 . 0 
+ 0 . 01 
17 
-0 
18.48 
48958.2 
18026.7 
45518.6 
+ 0 . 0 
24 
-0 
18.49 
48958.7 
18026.2 
45519.3 
+ 0 . 0 
Oct. 
1 
-0 
18.32 
48958.7 
18026.3 
45519.3 
+ 0 . 0 
8 
-0 
18.39 
48958.7 
18026.8 
45519.0 
+ 0.1 
15 
-0 
18.26 
-0 
18.41 
+ 68 
23.70 
48958.7 
18026.7 
45519.1 
+ 0 . 0 
-0.01 
22 
-0 
18.30 
48958.7 
18026.2 
45519.3 
+ 0 . 0 
29 
-0 
18.32 
48958.8 
18026.0 
45519.5 
+ 0 . 0 
Nov. 
5 
-0 
18.27 
48959.0 
18026.9 
45519.3 
+ 0.1 
12 
-0 
18.35 
-0 
18.31 
+ 68 
23.67 
48959.1 
18027.0 
45519.4 
+ 0.1 
-0.03 
19 
-0 
18.32 
48959.3 
18026.6 
45519.8 
+ 0 . 0 
26 
-0 
18.32 
48959.6 
18026.9 
45520.0 
+ 0 . 0 
Dec. 
3 
-0 
18.43 
48959.3 
18026.7 
45519.7 
+ 0.1 
10 
-0 
17.82 
-0 
18.16 
+ 68 
23.59 
48959.4 
18027.6 
45519.5 
+ 0 . 0 
-0.07 
17 
-0 
18.10 
48959.3 
18027.5 
45519.4 
+ 0.1 
23 
-0 
18.25 
48959.4 
18027.9 
45519.4 
+ 0 . 0 
30 
-0 
17.93 
48959.8 
18028.9 
45519.3 
+ 0.1