Table 1.4 1999 Base line values of the digital system 
33 
Wingst 1999 
Base-line measurements, system FGE125, IMS 
Do(abs) Do(rel) Io 
Month 
day 
Jan. 
6 
-0 C 
>17 . 
. 62 1 
-0 C 
>17 . 
. 53 1 
+ 68 c 
>23 . 
. 52 
13 
-0 
17 . 
.26 
20 
-0 
17 . 
.39 
27 
-0 
17 . 
. 42 
Feb. 
3 
-0 
17 . 
. 38 
10 
-0 
17 . 
. 58 
-0 
17 . 
.49 
+ 68 
23 . 
. 54 
17 
-0 
17 . 
. 09 
24 
-0 
17 . 
. 42 
March 
3 
-0 
17 . 
. 58 
-0 
17 . 
. 52 
+ 68 
23 . 
. 52 
11 
-0 
17 . 
. 64 
17 
-0 
17 . 
. 63 
25 
-0 
17 . 
. 70 
31 
-0 
17 . 
. 54 
April 
7 
-0 
17 . 
. 57 
14 
-0 
17 . 
. 61 
-0 
17 . 
. 64 
+ 68 
23 . 
. 52 
21 
-0 
17 . 
.40 
28 
-0 
17 . 
. 37 
May 
6 
-0 
17 . 
. 44 
12 
-0 
17 . 
. 59 
-0 
17 . 
.30 
+ 68 
23 . 
.49 
19 
-0 
17 . 
.40 
26 
-0 
17 . 
.60 
June 
2 
-0 
17 . 
. 58 
9 
-0 
17 . 
. 54 
16 
-0 
17 . 
.46 
-0 
17 . 
.43 
+ 68 
23 . 
.47 
23 
-0 
17 . 
. 36 
30 
-0 
17 . 
. 31 
July 
7 
-0 
17 . 
. 53 
14 
-0 
17 . 
.47 
21 
-0 
17 . 
. 42 
-0 
17 . 
.47 
+ 68 
23 . 
. 36 
28 
-0 
17 . 
. 58 
Aug. 
4 
-0 
17 . 
.45 
12 
-0 
17 . 
.48 
18 
-0 
17 . 
.40 
25 
-0 
17 . 
. 36 
-0 
17 . 
. 42 
+ 68 
23 . 
. 38 
Sep. 
1 
-0 
17 . 
. 38 
8 
-0 
17 . 
. 31 
15 
-0 
17 . 
.28 
23 
-0 
17 . 
. 37 
29 
-0 
17 . 
. 31 
-0 
17 . 
.49 
+ 68 
23 . 
.43 
Oct. 
7 
-0 
17 . 
. 35 
13 
-0 
17 . 
.46 
20 
-0 
17 . 
. 32 
-0 
17 . 
. 63 
+ 68 
23 . 
. 37 
27 
-0 
17 . 
. 37 
Nov. 
3 
-0 
17 . 
. 42 
11 
-0 
17 . 
. 38 
18 
-0 
17 . 
.60 
24 
-0 
17 . 
.48 
-0 
17 . 
. 50 
+ 68 
23 . 
. 35 
Dec. 
2 
-0 
17 . 
.47 
8 
-0 
17 . 
.47 
15 
-0 
17 . 
. 57 
-0 
17 . 
. 51 
+ 68 
23 . 
.46 
22 
-0 
17 . 
.60 
29 
-0 
17 . 
. 61 
Fo 
Ho 
Zo 
C 
E 
nT 
nT 
nT 
nT 
48960.3 
18030.0 
45519.2 
+ 0.3 
+ 0 . 02 
48960.4 
18028.9 
45519.1 
+ 0.9 
48960.1 
18028.3 
45518.9 
+ 1.0 
48960.4 
18028.3 
45519.3 
+ 1.0 
48959.6 
18027.9 
45518.7 
+ 0.9 
48960.1 
18029.1 
45519.1 
+ 0.6 
-0.02 
48960.8 
18029.0 
45519.4 
+ 1.0 
48960.2 
18029.0 
45518.7 
+ 1.1 
48960.2 
18028.5 
45519.0 
+ 1.0 
-0.07 
48960.0 
18027.4 
45518.7 
+ 1.5 
48960.1 
18028.6 
45518.8 
+ 1.0 
48960.6 
18028.8 
45519.1 
+ 1.2 
48960.6 
18028.0 
45519.0 
+ 1.6 
48960.6 
18029.1 
45519.1 
+ 1.1 
48960.5 
18029.1 
45519.1 
+ 1.0 
-0.04 
48960.5 
18029.5 
45519.1 
+ 0.8 
48960.5 
18029.3 
45519.3 
+ 0.7 
48960.5 
18029.0 
45519.3 
+ 0.8 
48960.8 
18029.5 
45519.4 
+ 0.8 
-0.05 
48960.5 
18029.7 
45518.8 
+ 1.0 
48960.8 
18029.6 
45519.3 
+ 0.9 
48960.6 
18028.7 
45518.9 
+ 1.4 
48960.5 
18029.7 
45518.9 
+ 0.9 
48960.6 
18029.8 
45518.9 
+ 1.0 
-0.03 
48960.8 
18029.3 
45519.3 
+ 1.0 
48960.4 
18029.6 
45519.1 
+ 0.7 
48960.9 
18029.6 
45519.3 
+ 1.0 
48960.4 
18029.2 
45519.0 
+ 0.9 
48959.8 
18029.3 
45518.5 
+ 0.7 
-0.17 
48960.3 
18029.4 
45518.7 
+ 1.0 
48960.3 
18028.2 
45518.7 
+ 1.5 
48960.0 
18028.9 
45518.7 
+ 0.9 
48960.1 
18028.8 
45518.7 
+ 1.0 
48959.6 
18029.2 
45518.5 
+ 0.6 
-0.15 
48959.7 
18029.0 
45518.7 
+ 0.6 
48959.9 
18028.6 
45518.6 
+ 1.0 
48959.8 
18029.4 
45518.3 
+ 0.9 
48959.8 
18028.6 
45518.2 
+ 1.3 
48960.4 
18030.0 
45518.1 
+ 1.5 
-0.04 
48960.3 
18030.3 
45518.8 
+ 0.6 
48960.3 
18029.2 
45518.6 
+ 1.2 
48960.5 
18030.1 
45518.8 
+ 0.9 
-0.11 
48960.3 
18029.7 
45519.0 
+ 0.6 
48960.7 
18030.1 
45518.9 
+ 1.0 
48960.5 
18029.5 
45519.1 
+ 0.8 
48960.6 
18028.6 
45519.4 
+ 1.0 
48960.6 
18029.5 
45519.1 
+ 0.9 
CO 
rH 
o 
48960.4 
18029.4 
45518.6 
+ 1.2 
48960.3 
18028.3 
45518.4 
+ 1.7 
48960.5 
18029.3 
45519.0 
+ 1.0 
-0.08 
48960.5 
18029.2 
45519.3 
+ 0.7 
48960.9 
18029.8 
45519.4 
+ 0.8