EPSG:26971 - NAD83 / Illinois East

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "NAD83 / Illinois East",
  "base_crs": {
    "name": "NAD83",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "North American Datum 1983",
      "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
      }
    },
    "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": 4269
    }
  },
  "conversion": {
    "name": "SPCS83 Illinois East zone (meter)",
    "method": {
      "name": "Transverse Mercator",
      "id": {
        "authority": "EPSG",
        "code": 9807
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": 36.6666666666667,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": -88.3333333333333,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 0.999975,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 300000,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Easting",
        "abbreviation": "X",
        "direction": "east",
        "unit": "metre"
      },
      {
        "name": "Northing",
        "abbreviation": "Y",
        "direction": "north",
        "unit": "metre"
      }
    ]
  },
  "scope": "Engineering survey, topographic mapping.",
  "area": "United States (USA) - Illinois - counties of Boone; Champaign; Clark; Clay; Coles; Cook; Crawford; Cumberland; De Kalb; De Witt; Douglas; Du Page; Edgar; Edwards; Effingham; Fayette; Ford; Franklin; Gallatin; Grundy; Hamilton; Hardin; Iroquois; Jasper; Jefferson; Johnson; Kane; Kankakee; Kendall; La Salle; Lake; Lawrence; Livingston; Macon; Marion; Massac; McHenry; McLean; Moultrie; Piatt; Pope; Richland; Saline; Shelby; Vermilion; Wabash; Wayne; White; Will; Williamson.",
  "bbox": {
    "south_latitude": 37.06,
    "west_longitude": -89.27,
    "north_latitude": 42.5,
    "east_longitude": -87.02
  },
  "id": {
    "authority": "EPSG",
    "code": 26971
  }
}

{'crs_wkt': 'PROJCRS["NAD83 / Illinois East",BASEGEOGCRS["NAD83",DATUM["North '
            'American Datum 1983",ELLIPSOID["GRS '
            '1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4269]],CONVERSION["SPCS83 '
            'Illinois East zone (meter)",METHOD["Transverse '
            'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
            'origin",36.6666666666667,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",-88.3333333333333,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",0.999975,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",300000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting '
            '(X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing '
            '(Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Engineering '
            'survey, topographic mapping."],AREA["United States (USA) - '
            'Illinois - counties of Boone; Champaign; Clark; Clay; Coles; '
            'Cook; Crawford; Cumberland; De Kalb; De Witt; Douglas; Du Page; '
            'Edgar; Edwards; Effingham; Fayette; Ford; Franklin; Gallatin; '
            'Grundy; Hamilton; Hardin; Iroquois; Jasper; Jefferson; Johnson; '
            'Kane; Kankakee; Kendall; La Salle; Lake; Lawrence; Livingston; '
            'Macon; Marion; Massac; McHenry; McLean; Moultrie; Piatt; Pope; '
            'Richland; Saline; Shelby; Vermilion; Wabash; Wayne; White; Will; '
            'Williamson."],BBOX[37.06,-89.27,42.5,-87.02]],ID["EPSG",26971]]',
 'false_easting': 300000.0,
 'false_northing': 0.0,
 'geographic_crs_name': 'NAD83',
 'grid_mapping_name': 'transverse_mercator',
 'horizontal_datum_name': 'North American Datum 1983',
 'inverse_flattening': 298.257222101,
 'latitude_of_projection_origin': 36.666666666666664,
 'longitude_of_central_meridian': -88.33333333333333,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'projected_crs_name': 'NAD83 / Illinois East',
 'reference_ellipsoid_name': 'GRS 1980',
 'scale_factor_at_central_meridian': 0.999975,
 'semi_major_axis': 6378137.0,
 'semi_minor_axis': 6356752.314140356}