iSDAsoil Extractable Potassium

var mean_0_20 =
'<RasterSymbolizer>' +
 '<ColorMap type="ramp">' +
  '<ColorMapEntry color="#0D0887" label="0-32.1" opacity="1" quantity="35"/>' +
  '<ColorMapEntry color="#350498" label="32.1-43.7" opacity="1" quantity="38"/>' +
  '<ColorMapEntry color="#5402A3" label="43.7-48.4" opacity="1" quantity="39"/>' +
  '<ColorMapEntry color="#7000A8" label="48.4-53.6" opacity="1" quantity="40"/>' +
  '<ColorMapEntry color="#8B0AA5" label="53.6-59.3" opacity="1" quantity="41"/>' +
  '<ColorMapEntry color="#A31E9A" label="59.3-65.7" opacity="1" quantity="42"/>' +
  '<ColorMapEntry color="#B93289" label="65.7-72.7" opacity="1" quantity="43"/>' +
  '<ColorMapEntry color="#CC4678" label="72.7-89" opacity="1" quantity="45"/>' +
  '<ColorMapEntry color="#DB5C68" label="89-98.5" opacity="1" quantity="46"/>' +
  '<ColorMapEntry color="#E97158" label="98.5-108.9" opacity="1" quantity="47"/>' +
  '<ColorMapEntry color="#F48849" label="108.9-120.5" opacity="1" quantity="48"/>' +
  '<ColorMapEntry color="#FBA139" label="120.5-133.3" opacity="1" quantity="49"/>' +
  '<ColorMapEntry color="#FEBC2A" label="133.3-163" opacity="1" quantity="51"/>' +
  '<ColorMapEntry color="#FADA24" label="163-199.3" opacity="1" quantity="53"/>' +
  '<ColorMapEntry color="#F0F921" label="163-1200" opacity="1" quantity="55"/>' +
 '</ColorMap>' +
 '<ContrastEnhancement/>' +
'</RasterSymbolizer>';

var mean_20_50 =
'<RasterSymbolizer>' +
 '<ColorMap type="ramp">' +
  '<ColorMapEntry color="#0D0887" label="0-32.1" opacity="1" quantity="35"/>' +
  '<ColorMapEntry color="#350498" label="32.1-43.7" opacity="1" quantity="38"/>' +
  '<ColorMapEntry color="#5402A3" label="43.7-48.4" opacity="1" quantity="39"/>' +
  '<ColorMapEntry color="#7000A8" label="48.4-53.6" opacity="1" quantity="40"/>' +
  '<ColorMapEntry color="#8B0AA5" label="53.6-59.3" opacity="1" quantity="41"/>' +
  '<ColorMapEntry color="#A31E9A" label="59.3-65.7" opacity="1" quantity="42"/>' +
  '<ColorMapEntry color="#B93289" label="65.7-72.7" opacity="1" quantity="43"/>' +
  '<ColorMapEntry color="#CC4678" label="72.7-89" opacity="1" quantity="45"/>' +
  '<ColorMapEntry color="#DB5C68" label="89-98.5" opacity="1" quantity="46"/>' +
  '<ColorMapEntry color="#E97158" label="98.5-108.9" opacity="1" quantity="47"/>' +
  '<ColorMapEntry color="#F48849" label="108.9-120.5" opacity="1" quantity="48"/>' +
  '<ColorMapEntry color="#FBA139" label="120.5-133.3" opacity="1" quantity="49"/>' +
  '<ColorMapEntry color="#FEBC2A" label="133.3-163" opacity="1" quantity="51"/>' +
  '<ColorMapEntry color="#FADA24" label="163-199.3" opacity="1" quantity="53"/>' +
  '<ColorMapEntry color="#F0F921" label="163-1200" opacity="1" quantity="55"/>' +
 '</ColorMap>' +
 '<ContrastEnhancement/>' +
'</RasterSymbolizer>';

var stdev_0_20 =
'<RasterSymbolizer>' +
 '<ColorMap type="ramp">' +
  '<ColorMapEntry color="#fde725" label="low" opacity="1" quantity="1"/>' +
  '<ColorMapEntry color="#5dc962" label=" " opacity="1" quantity="2"/>' +
  '<ColorMapEntry color="#20908d" label=" " opacity="1" quantity="3"/>' +
  '<ColorMapEntry color="#3a528b" label=" " opacity="1" quantity="4"/>' +
  '<ColorMapEntry color="#440154" label="high" opacity="1" quantity="5"/>' +
 '</ColorMap>' +
 '<ContrastEnhancement/>' +
'</RasterSymbolizer>';

var stdev_20_50 =
'<RasterSymbolizer>' +
 '<ColorMap type="ramp">' +
  '<ColorMapEntry color="#fde725" label="low" opacity="1" quantity="1"/>' +
  '<ColorMapEntry color="#5dc962" label=" " opacity="1" quantity="2"/>' +
  '<ColorMapEntry color="#20908d" label=" " opacity="1" quantity="3"/>' +
  '<ColorMapEntry color="#3a528b" label=" " opacity="1" quantity="4"/>' +
  '<ColorMapEntry color="#440154" label="high" opacity="1" quantity="5"/>' +
 '</ColorMap>' +
 '<ContrastEnhancement/>' +
'</RasterSymbolizer>';

var raw = ee.Image("ISDASOIL/Africa/v1/potassium_extractable");
Map.addLayer(
    raw.select(0).sldStyle(mean_0_20), {},
    "Potassium extractable, mean visualization, 0-20 cm");
Map.addLayer(
    raw.select(1).sldStyle(mean_20_50), {},
    "Potassium extractable, mean visualization, 20-50 cm");
Map.addLayer(
    raw.select(2).sldStyle(stdev_0_20), {},
    "Potassium extractable, stdev visualization, 0-20 cm");
Map.addLayer(
    raw.select(3).sldStyle(stdev_20_50), {},
    "Potassium extractable, stdev visualization, 20-50 cm");

var converted = raw.divide(10).exp().subtract(1);

var visualization = {min: 0, max: 250};

Map.setCenter(25, -3, 2);

Map.addLayer(converted.select(0), visualization, "Potassium extractable, mean, 0-20 cm");