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

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