{
  "provenance": "Synthetic teaching inputs, not a measured epoch",
  "latitude_deg": 45,
  "longitude_deg": 0,
  "height_m": 0,
  "ellipsoid": {
    "name": "WGS 84",
    "a_m": 6378137,
    "e_squared": 0.0066943799901413165
  },
  "origin_ecef_m": [
    4517590.878848932,
    0,
    4487348.408865919
  ],
  "point_ecef_m": [
    4517591.878848932,
    2,
    4487351.408865919
  ],
  "delta_ecef_m": [
    1,
    2,
    3
  ],
  "rotation_ecef_to_enu": [
    [
      0,
      1,
      0
    ],
    [
      -0.7071067811865476,
      0,
      0.7071067811865476
    ],
    [
      0.7071067811865476,
      0,
      0.7071067811865476
    ]
  ],
  "offset_enu_m": [
    2,
    1.4142135623730951,
    2.8284271247461903
  ],
  "covariance_ecef_m2": [
    [
      4,
      1,
      2
    ],
    [
      1,
      9,
      0
    ],
    [
      2,
      0,
      16
    ]
  ],
  "covariance_enu_m2": [
    [
      9,
      -0.7071067811865476,
      0.7071067811865476
    ],
    [
      -0.7071067811865476,
      8.000000000000002,
      6.000000000000001
    ],
    [
      0.7071067811865476,
      6.000000000000002,
      12.000000000000002
    ]
  ]
}