Summary of LINZ Tiers, Classes & Orders

The following tables summarise the Tiers and Classes used by LINZ to describe the network and local accuracy of coordinates that it provides

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These values are formally defined in LINZS25006.

Tiers

The following Tiers are used by LINZ to describe network accuracy.

Tier Accuracy (m)
A 0.05
B 0.10
C 0.15
D 0.20
E 0.25
F 0.35
G 0.50
H 1
J 2
K 5
M 10
N 20
P 50
R 100

Classes

The following Classes are used by LINZ to describe local accuracy.

Class Constant term (c) (m) Distance dependent term (p) (m)
I 0.003 1 x 10-8
II 0.003 3 x 10-8
III 0.003 1 x 10-7
IV 0.003 3 x 10-7
V 0.003 1 x 10-6
VI 0.01 3 x 10-6
VII 0.01 1 x 10-5
VIII 0.01 5 x 10-5
IX 0.02 1 x 10-4
X 0.03 1.5 x 10-4
XI 0.06 1.5 x 10-4
XII 0.30 6 x 10-4
XIII 0.60 1 x 10-3
XIV 1 3 x 10-3
XV 3 1 x 10-2
XVI 10 3 x 10-2

Landonline Orders

The following Landonline Orders are used by LINZ to classify the accuracy of coordinates in Landonline.

Landonline Order Horizontal Tier Horizontal Class Vertical Tier Vertical Class
0 A II A II
1 A III B IV
2 B V E VI
3 B VI F VII
4 C VII F VIII
5 C VIII F IX
6 C X - -
7 D XI - -
8 G XII - -
9 K XIV - -
10 N XV - -
11 P XVI - -
12a - - - -
 
1V - - E VI
2V - - F VII
3V - - F IX
4V - - G X
5V - - H XII
6Vb - - - -
a Order 12 includes all coordinates that do not achieve the Order 11 requirements
b Order 6V includes all coordinates that do not achieve the Order 5V requirements