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.

TierAccuracy (m)
A0.05
B0.10
C0.15
D0.20
E0.25
F0.35
G0.50
H1
J2
K5
M10
N20
P50
R100

Classes

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

ClassConstant term (c) (m)Distance dependent term (p) (m)
I0.0031 x 10-8
II0.0033 x 10-8
III0.0031 x 10-7
IV0.0033 x 10-7
V0.0031 x 10-6
VI0.013 x 10-6
VII0.011 x 10-5
VIII0.015 x 10-5
IX0.021 x 10-4
X0.031.5 x 10-4
XI0.061.5 x 10-4
XII0.306 x 10-4
XIII0.601 x 10-3
XIV13 x 10-3
XV31 x 10-2
XVI103 x 10-2

Landonline Orders

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

Landonline OrderHorizontal TierHorizontal ClassVertical TierVertical Class
0AIIAII
1AIIIBIV
2BVEVI
3BVIFVII
4CVIIFVIII
5CVIIIFIX
6CX--
7DXI--
8GXII--
9KXIV--
10NXV--
11PXVI--
12a----
 
1V--EVI
2V--FVII
3V--FIX
4V--GX
5V--HXII
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