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    SSM     PORT HEDLAND 99
    Alternate names : Map ref.: PORT HEDLAND SF50-4
    APREF/NGCA codes: Database number : 115275
    Stamp name:      PH99 Date established :   01/08/1985
    Physical status : located (Vision Surveys) Phys. status date :  16/06/2014
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 20 18 33.25855Easting (m) :   665816.182
    Longitude :  E 118 35 17.27067Northing (m) :  7753499.993
    Convergence :       0 33 4.84
    Point scale factor : 0.99993982
    Coordinate date :       14/08/2018
    Horizontal method :   GNSS Survey NetworkCadastral connection : Exists
    Relative horiz. accuracy :       20ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.016 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.016
    Semi-minor axis (m) : 0.016
    Azimuth of semi-major axis (deg) : 115 9 10
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PHG2020Port Hedland Grid 2020
    Easting (m) :   48760.359
    Northing (m) :  253396.043
    Convergence :       -0 0 14.83
    Point scale factor : 1.00000137
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         15.142Height date :          04/05/2000
    Established by :  McKimmie Jamieson & PartState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA2020 ellipsoidal height (m) : 13.686N-Value (m) :          -1.456
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         13.696Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.025m
    Mark to hatch cover :  
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM2 Phys. status : destroyed (Landgate) Date :   14/03/2012
    Phys. type :    bridge nailSet in : bitumen
    Azimuth :           159 24 27Type :   True azimuth
    Distance (m) :    7.716Type :   Horizontal
    Height diff. (m) : 0.131Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM2
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 20 18 33.49343Easting (m) :   665818.826
    Longitude :  E 118 35 17.36421Northing (m) :  7753492.745
    Project Grid - PHG2020Port Hedland Grid 2020
    Easting (m) :   48763.073
    Northing (m) :  253388.820
    Height Information
    Vertical datum :   AHD71
    Height (m) :         15.273
    Cadastral Connection Fieldbooks
    G.A.ROBB 16
    LG 103964
    LG 104274
    LG 108924
    Special Notes
    08/02/2013PH 99 moved and is now PH 99A
    ATRF 2014
    GDA2020 coordinates are equivalent to ATRF2014@2020.0. ATRF2014 coordinates can be determined by application of the Australian Plate Motion Model. For general and technical information on GDA2020 see http://www.icsm.gov.au/gda2020 and ATRF2014 see http://www.icsm.gov.au/australian-terrestrial-reference-frame.
    View the graphic summary
    SSM     PORT HEDLAND 99
    Alternate names : Map ref.: PORT HEDLAND SF50-4
    APREF/NGCA codes: Database number : 115275
    Stamp name:      PH99 Date established :   01/08/1985
    Physical status : located (Vision Surveys) Phys. status date :  16/06/2014
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 20 18 33.30740Easting (m) :   665815.158
    Longitude :  E 118 35 17.23587Northing (m) :  7753498.501
    Convergence :       0 33 4.83
    Point scale factor : 0.99993982
    Coordinate date :       02/04/2014
    Horizontal method :   Global Position SystemCadastral connection : Exists
    Relative horiz. accuracy :       10ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.009 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.009
    Semi-minor axis (m) : 0.009
    Azimuth of semi-major axis (deg) : 134 0 0
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PHG94Port Hedland Grid 1994
    Easting (m) :   48759.349
    Northing (m) :  153394.541
    Convergence :       -0 0 14.84
    Point scale factor : 1.00000137
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         15.142Height date :          04/05/2000
    Established by :  McKimmie Jamieson & PartState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA94 ellipsoidal height (m) : 13.748N-Value (m) :          -1.394
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         13.696Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.025m
    Mark to hatch cover :  
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM2 Phys. status : destroyed (Landgate) Date :   14/03/2012
    Phys. type :    bridge nailSet in : bitumen
    Azimuth :           159 24 27Type :   True azimuth
    Distance (m) :    7.716Type :   Horizontal
    Height diff. (m) : 0.131Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM2
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 20 18 33.54228Easting (m) :   665817.802
    Longitude :  E 118 35 17.32941Northing (m) :  7753491.253
    Project Grid - PHG94Port Hedland Grid 1994
    Easting (m) :   48762.063
    Northing (m) :  153387.318
    Height Information
    Vertical datum :   AHD71
    Height (m) :         15.273
    Cadastral Connection Fieldbooks
    G.A.ROBB 16
    LG 103964
    LG 104274
    LG 108924
    Special Notes
    08/02/2013PH 99 moved and is now PH 99A