21-1 Analysis of a datum problem 461
l [
◦
]
b [
◦
]
L [
◦
]
B [
◦
]
H [m] l
− L [
]
a 28
δA+
+a 29
δE
2
[
]
b
− B−
−a 28
δA+
+a 29
δE
2
[
]
Fig. 21.2. Pseudo-observations, part one. Courtesy of Landesvermessungsamt Baden–W¨ urttemberg. 1st: point
counter. 2nd: station number. 3rd: station name. 4th: l [
◦ ]. 5th: b [
◦ ]. 6th: L [
◦ ]. 7th: B [
◦ ]. 8th: H [m]. 9th:
l − L [
]. 10th: lateral variation [
] due to δA, δE
2 . 11th: b − B − (column10) [
].
l [
◦
]
b [
◦
]
L [
◦
]
B [
◦
]
H [m] l
− L [
]
a 28
δA+
+a 29
δE
2
[
]
b
− B−
−a 28
δA+
+a 29
δE
2
[
]
Fig. 21.2. Pseudo-observations, part one. Courtesy of Landesvermessungsamt Baden–W¨ urttemberg. 1st: point
counter. 2nd: station number. 3rd: station name. 4th: l [
◦ ]. 5th: b [
◦ ]. 6th: L [
◦ ]. 7th: B [
◦ ]. 8th: H [m]. 9th:
l − L [
]. 10th: lateral variation [
] due to δA, δE
2 . 11th: b − B − (column10) [
].