EPSG:5436

COORDINATEOPERATION["Baltic 1977 height to EVRF2000 height (1)",
    VERSION["EuG-Est"],
    SOURCECRS[
        VERTCRS["Baltic 1977 height",
            VDATUM["Baltic 1977"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5705]]],
    TARGETCRS[
        VERTCRS["EVRF2000 height",
            VDATUM["European Vertical Reference Frame 2000"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5730]]],
    METHOD["Vertical Offset and Slope",
        ID["EPSG",1046]],
    PARAMETER["Ordinate 1 of evaluation point",58.7,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8617]],
    PARAMETER["Ordinate 2 of evaluation point",25.8666666666667,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8618]],
    PARAMETER["Vertical Offset",0.133,
        LENGTHUNIT["metre",1],
        ID["EPSG",8603]],
    PARAMETER["Inclination in latitude",-0.014,
        ANGLEUNIT["arc-second",4.84813681109536E-06],
        ID["EPSG",8730]],
    PARAMETER["Inclination in longitude",0.005,
        ANGLEUNIT["arc-second",4.84813681109536E-06],
        ID["EPSG",8731]],
    INTERPOLATIONCRS[
        GEOGCRS["ETRS89",
            ENSEMBLE["European Terrestrial Reference System 1989 ensemble",
                MEMBER["European Terrestrial Reference Frame 1989"],
                MEMBER["European Terrestrial Reference Frame 1990"],
                MEMBER["European Terrestrial Reference Frame 1991"],
                MEMBER["European Terrestrial Reference Frame 1992"],
                MEMBER["European Terrestrial Reference Frame 1993"],
                MEMBER["European Terrestrial Reference Frame 1994"],
                MEMBER["European Terrestrial Reference Frame 1996"],
                MEMBER["European Terrestrial Reference Frame 1997"],
                MEMBER["European Terrestrial Reference Frame 2000"],
                MEMBER["European Terrestrial Reference Frame 2005"],
                MEMBER["European Terrestrial Reference Frame 2014"],
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]],
                ENSEMBLEACCURACY[0.1]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]]]],
    OPERATIONACCURACY[0.1],
    USAGE[
        SCOPE["Change of height to a different vertical reference surface."],
        AREA["Estonia - onshore."],
        BBOX[57.52,21.74,59.75,28.2]],
    ID["EPSG",5436],
    REMARK["Determined at 36 points. RMS residual 0.003m, maximum residual 0.005m."]]

proj4.defs("EPSG:5436","+proj=vertoffset +lat_0=58.7 +lon_0=25.8666666666667 +dh=0.133 +slope_lat=-0.014 +slope_lon=0.005");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Baltic 1977 height to EVRF2000 height (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "Baltic 1977 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Baltic 1977"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5705
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "EVRF2000 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "European Vertical Reference Frame 2000"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5730
        }
    },
    "interpolation_crs": {
        "type": "GeographicCRS",
        "name": "ETRS89",
        "datum_ensemble": {
            "name": "European Terrestrial Reference System 1989 ensemble",
            "members": [
                {
                    "name": "European Terrestrial Reference Frame 1989",
                    "id": {
                        "authority": "EPSG",
                        "code": 1178
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1990",
                    "id": {
                        "authority": "EPSG",
                        "code": 1179
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1991",
                    "id": {
                        "authority": "EPSG",
                        "code": 1180
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1992",
                    "id": {
                        "authority": "EPSG",
                        "code": 1181
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1993",
                    "id": {
                        "authority": "EPSG",
                        "code": 1182
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1994",
                    "id": {
                        "authority": "EPSG",
                        "code": 1183
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1996",
                    "id": {
                        "authority": "EPSG",
                        "code": 1184
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 1997",
                    "id": {
                        "authority": "EPSG",
                        "code": 1185
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 2000",
                    "id": {
                        "authority": "EPSG",
                        "code": 1186
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 2005",
                    "id": {
                        "authority": "EPSG",
                        "code": 1204
                    }
                },
                {
                    "name": "European Terrestrial Reference Frame 2014",
                    "id": {
                        "authority": "EPSG",
                        "code": 1206
                    }
                }
            ],
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            },
            "accuracy": "0.1",
            "id": {
                "authority": "EPSG",
                "code": 6258
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4258
        }
    },
    "method": {
        "name": "Vertical Offset and Slope",
        "id": {
            "authority": "EPSG",
            "code": 1046
        }
    },
    "parameters": [
        {
            "name": "Ordinate 1 of evaluation point",
            "value": 58.7,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8617
            }
        },
        {
            "name": "Ordinate 2 of evaluation point",
            "value": 25.8666666666667,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8618
            }
        },
        {
            "name": "Vertical Offset",
            "value": 0.133,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8603
            }
        },
        {
            "name": "Inclination in latitude",
            "value": -0.014,
            "unit": {
                "type": "AngularUnit",
                "name": "arc-second",
                "conversion_factor": 4.84813681109536e-06
            },
            "id": {
                "authority": "EPSG",
                "code": 8730
            }
        },
        {
            "name": "Inclination in longitude",
            "value": 0.005,
            "unit": {
                "type": "AngularUnit",
                "name": "arc-second",
                "conversion_factor": 4.84813681109536e-06
            },
            "id": {
                "authority": "EPSG",
                "code": 8731
            }
        }
    ],
    "accuracy": "0.1",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "Estonia - onshore.",
    "bbox": {
        "south_latitude": 57.52,
        "west_longitude": 21.74,
        "north_latitude": 59.75,
        "east_longitude": 28.2
    },
    "id": {
        "authority": "EPSG",
        "code": 5436
    },
    "remarks": "Determined at 36 points. RMS residual 0.003m, maximum residual 0.005m."
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=vertoffset +lat_0=58.7 +lon_0=25.8666666666667 +dh=0.133 +slope_lat=-0.014 +slope_lon=0.005">
	<Layer srs="+proj=vertoffset +lat_0=58.7 +lon_0=25.8666666666667 +dh=0.133 +slope_lat=-0.014 +slope_lon=0.005">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5436, 'EPSG', 5436, '+proj=vertoffset +lat_0=58.7 +lon_0=25.8666666666667 +dh=0.133 +slope_lat=-0.014 +slope_lon=0.005', 'None');