{
 "objectIdFieldName": "",
 "fields": [
  {
   "name": "OID",
   "type": "esriFieldTypeOID",
   "alias": "OID",
   "domain": null
  },
  {
   "name": "Value",
   "type": "esriFieldTypeInteger",
   "alias": "Value",
   "domain": null
  },
  {
   "name": "Count",
   "type": "esriFieldTypeDouble",
   "alias": "Count",
   "domain": null
  },
  {
   "name": "Type",
   "type": "esriFieldTypeString",
   "alias": "Type",
   "domain": null,
   "length": 254
  },
  {
   "name": "SID",
   "type": "esriFieldTypeString",
   "alias": "SID",
   "domain": null,
   "length": 254
  }
 ],
 "features": [
  {
   "attributes": {
    "OID": 0,
    "Value": -8888,
    "Count": 221556845,
    "Type": "Land",
    "SID": "The grid value at this location has a positive value (+ve), i.e. is coded as land. Please note that for the Southern Ocean region (south of 60°S) based on the IBCSO, elevation values are based on the Bedmap2 data set and coded as 3500."
   }
  },
  {
   "attributes": {
    "OID": 1,
    "Value": 0,
    "Count": 386928842,
    "Type": "Indirect",
    "SID": "The grid value at this location has been developed from a database of ship track soundings with interpolation between soundings guided by satellite derived gravity data. At this location in the grid, the data value has been interpolated."
   }
  },
  {
   "attributes": {
    "OID": 2,
    "Value": 110,
    "Count": 484257,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the Caspian Sea grid, (see Annex A.1 ). This grid has been generated from a data set of soundings using a kriging gridding algorithm."
   }
  },
  {
   "attributes": {
    "OID": 3,
    "Value": 120,
    "Count": 678969,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the Black Sea grid, (see Annex A.2 ). This grid has been generated from a data set of soundings using a kriging gridding algorithm."
   }
  },
  {
   "attributes": {
    "OID": 4,
    "Value": 130,
    "Count": 6001406,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the GEBCO_08 Grid. In this region, the GEBCO_08 Grid is based on the Weddell Sea grid). This grid has been generated from a data set of bathymetric contours based largely on multibeam and single beam"
   }
  },
  {
   "attributes": {
    "OID": 5,
    "Value": 1100,
    "Count": 106614,
    "Type": "Direct",
    "SID": "The grid value at this location is taken from the Caspian Sea grid, (see Annex A.1 ). The grid cell at this location contains a sounding(s) from the Caspian Sea source data set."
   }
  },
  {
   "attributes": {
    "OID": 6,
    "Value": 1200,
    "Count": 74778,
    "Type": "Direct",
    "SID": "The grid value at this location is taken from the Black Sea grid, (see Annex A.2 ). The grid cell at this location contains a sounding(s) from the Black Sea source data set."
   }
  },
  {
   "attributes": {
    "OID": 7,
    "Value": 1300,
    "Count": 90660,
    "Type": "Direct",
    "SID": "The grid cell at this location is 'crossed' by trackline control information, i.e. survey track or isolated sounding, from the Weddell Sea source data set."
   }
  },
  {
   "attributes": {
    "OID": 8,
    "Value": 1400,
    "Count": 5424489,
    "Type": "Unknown",
    "SID": "The grid value at this location is taken from the Geoscience Australia grid 'Australian Bathymetry and Topography Grid, June 2009'."
   }
  },
  {
   "attributes": {
    "OID": 9,
    "Value": 1500,
    "Count": 22498,
    "Type": "Direct",
    "SID": "The grid value at this location is based on ENC soundings supplied by the East Asia Hydrographic Commission."
   }
  },
  {
   "attributes": {
    "OID": 10,
    "Value": 1550,
    "Count": 29912,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on ENC bathymetric contours supplied by the East Asia Hydrographic Commission."
   }
  },
  {
   "attributes": {
    "OID": 11,
    "Value": 1600,
    "Count": 405372,
    "Type": "Unknown",
    "SID": "The grid value at this location is based on gridded data from the North American Great Lakes gridded data sets."
   }
  },
  {
   "attributes": {
    "OID": 12,
    "Value": 1700,
    "Count": 256583,
    "Type": "Direct",
    "SID": "The grid value at this location is based on gridded data from the Gulf of Cadiz gridded data set 'The quest for the Africa-Eurasia plate boundary west of the Strait of Gibraltar'."
   }
  },
  {
   "attributes": {
    "OID": 13,
    "Value": 1800,
    "Count": 53680,
    "Type": "Direct",
    "SID": "The grid value at this location is based on multibeam data from the 2004 cruise of HMS Scott."
   }
  },
  {
   "attributes": {
    "OID": 14,
    "Value": 1900,
    "Count": 58679785,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the IBCAO V3 grid ( www.ibcao.org ) and is based on interpolation."
   }
  },
  {
   "attributes": {
    "OID": 15,
    "Value": 1910,
    "Count": 27269356,
    "Type": "Direct",
    "SID": "The grid value at this location is based on multibeam data."
   }
  },
  {
   "attributes": {
    "OID": 16,
    "Value": 1920,
    "Count": 11658575,
    "Type": "Direct",
    "SID": "The grid value at this location is based on single beam data in the IBCAO V3 or IBCSO V1 grids."
   }
  },
  {
   "attributes": {
    "OID": 17,
    "Value": 1940,
    "Count": 10312,
    "Type": "Unknown",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on depth data from digital bathymetric models."
   }
  },
  {
   "attributes": {
    "OID": 18,
    "Value": 1950,
    "Count": 11886459,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the IBCAO V3 and is based on depth contours from digitised charts."
   }
  },
  {
   "attributes": {
    "OID": 19,
    "Value": 2000,
    "Count": 4655091,
    "Type": "Direct",
    "SID": "The grid value at this location is based on Olex data."
   }
  },
  {
   "attributes": {
    "OID": 20,
    "Value": 2100,
    "Count": 2916746,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on interpolation using an adjustable tension continuous curvature surface gridding algorithm 'surface' from GMT."
   }
  },
  {
   "attributes": {
    "OID": 21,
    "Value": 2200,
    "Count": 21627447,
    "Type": "Direct",
    "SID": "The grid value at this location is based on data from the Lamont-Doherty Earth Observatory (LDEO) of Columbia University, Global Multi-Resolution Topography Synthesis."
   }
  },
  {
   "attributes": {
    "OID": 22,
    "Value": 2300,
    "Count": 1257505,
    "Type": "Direct",
    "SID": "The grid value at this location is based on a gridded bathymetric data set for Irish designated waters, based on multibeam surveys, provided by the Geological Survey of Ireland."
   }
  },
  {
   "attributes": {
    "OID": 23,
    "Value": 3100,
    "Count": 42656,
    "Type": "Direct",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on data from nautical charts."
   }
  },
  {
   "attributes": {
    "OID": 24,
    "Value": 3200,
    "Count": 2056,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on steering points."
   }
  },
  {
   "attributes": {
    "OID": 25,
    "Value": 3300,
    "Count": 17512668,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on interpolation."
   }
  },
  {
   "attributes": {
    "OID": 26,
    "Value": 3328,
    "Count": 1,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on interpolation."
   }
  },
  {
   "attributes": {
    "OID": 27,
    "Value": 3400,
    "Count": 22948802,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on data from the GEBCO_08 Grid. In this region, the GEBCO_08 Grid is based on interpolation guided by satellite-derived gravity data."
   }
  },
  {
   "attributes": {
    "OID": 28,
    "Value": 3450,
    "Count": 119117,
    "Type": "Direct",
    "SID": "The grid value at this location is based on data from the GEBCO_08 Grid. At this location, the GEBCO_08 Grid is based on measured sounding data."
   }
  },
  {
   "attributes": {
    "OID": 29,
    "Value": 3500,
    "Count": 95277088,
    "Type": "Land",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on data from the Bedmap2 data set"
   }
  },
  {
   "attributes": {
    "OID": 30,
    "Value": 3600,
    "Count": 244476,
    "Type": "Direct",
    "SID": "The grid value at this location is taken from the IBCSO V1 grid and is based on other grids and data sets"
   }
  },
  {
   "attributes": {
    "OID": 31,
    "Value": 3700,
    "Count": 15909,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on control contours used to help constrain the grid interpolation process using GMT's 'surface' gridding algorithm"
   }
  },
  {
   "attributes": {
    "OID": 32,
    "Value": 3800,
    "Count": 4517583,
    "Type": "Direct",
    "SID": "The grid value at this location is based on data from the EMODnet 2013 Grid"
   }
  },
  {
   "attributes": {
    "OID": 33,
    "Value": 3900,
    "Count": 882314,
    "Type": "Indirect",
    "SID": "The grid value at this location is taken from the Baltic Sea Bathymetry Database grid."
   }
  },
  {
   "attributes": {
    "OID": 34,
    "Value": 4000,
    "Count": 27315,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on the GEBCO One Minute Grid."
   }
  },
  {
   "attributes": {
    "OID": 35,
    "Value": 4100,
    "Count": 2505,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on bathymetric contours from the Centenary Edition of the GEBCO Digital Atlas."
   }
  },
  {
   "attributes": {
    "OID": 36,
    "Value": 4200,
    "Count": 1653,
    "Type": "Indirect",
    "SID": "The grid value at this location is based on bathymetric contours from the International Bathymetric Chart of the Mediterranean (IBCM)."
   }
  },
  {
   "attributes": {
    "OID": 37,
    "Value": 4300,
    "Count": 115753,
    "Type": "Direct",
    "SID": "The grid value at this location is based on multibeam data from RRS Charles Darwin cruise CD118."
   }
  },
  {
   "attributes": {
    "OID": 38,
    "Value": 4400,
    "Count": 50830,
    "Type": "Direct",
    "SID": "The grid value at this location is based on ENC soundings provided by the Servicio Hidrográfico y Oceanográfico de la Armada de Chile."
   }
  },
  {
   "attributes": {
    "OID": 39,
    "Value": 4500,
    "Count": 5271428,
    "Type": "Direct",
    "SID": "The grid value at this location is based on the Japanese Coast Guard grid and in this region the grid is based on multibeam data."
   }
  },
  {
   "attributes": {
    "OID": 40,
    "Value": 4550,
    "Count": 65854,
    "Type": "Direct",
    "SID": "The grid value at this location is based on the Japanese Coast Guard grid and in this region the grid is based on the J-EGG500 grid JODC-Expert Grid data for Geographic -500m."
   }
  },
  {
   "attributes": {
    "OID": 41,
    "Value": 9999,
    "Count": 23945811,
    "Type": "Direct",
    "SID": "The grid value at this location has been developed from a database of ship track soundings with interpolation between soundings guided by satellite derived gravity data. At this location, the grid cell has been constrained by a bathymetric sounding(s)"
   }
  }
 ]
}