README.md

$ ./decode-adc.js 
[
   0.5,    1,  1.5,    2, 2.5,    3,  3.5,
     4,  4.5,    5,  5.5,   6,  6.5,    7,
   7.5,    8,  8.5,    9, 9.5,   10, 10.5,
    11, 11.5,   12, 12.5,  13, 13.5,   14,
  14.5,   15, 15.5,   16
]

decode-adc.js

#!/usr/bin/env node
var ascii85 = require('ascii85')
var b85_table = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '!', '#', '$', '%', '&', '«', '»', '*', '+', '-', ';', '<', '=', '>', '?', '@', '^', '_', '`', '{', '|', '}', '~'];
var c = new ascii85.Ascii85({table:b85_table});

function decodeFloat16(binary) {
    var exponent = (binary & 0x7C00) >> 10,
        fraction = binary & 0x03FF;
    var output = (binary >> 15 ? -1 : 1) * (
        exponent ?
        (
            exponent === 0x1F ?
            fraction ? NaN : Infinity :
            Math.pow(2, exponent - 15) * (1 + fraction / 0x400)
        ) :
        6.103515625e-5 * (fraction / 0x400));
    return(output);
};

function decode(string) {
    var buf = c.decode(string);
    var output = [];
    for(var i = 0; i < buf.length; i+=2) {
        var v = decodeFloat16(buf.readUInt16LE(i));
        output.push(v);
    }
    return(output);
};


console.log(decode("05||V06qXf06_pk07C#ofJ6XAfJFdCfJOjEfJXpGKuCZ{z«@c|KuLf}z»1i~KuUm0z»Ap1Kuds2z»Jv3"));

package-lock.json

{
  "name": "ascii85",
  "lockfileVersion": 2,
  "requires": true,
  "packages": {
    "": {
      "dependencies": {
        "ascii85": "^1.0.2"
      }
    },
    "node_modules/ascii85": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/ascii85/-/ascii85-1.0.2.tgz",
      "integrity": "sha1-YhJUPUI2lE3r5IJ+yuZCd25BVEg=",
      "engines": {
        "node": ">=0.12"
      }
    }
  },
  "dependencies": {
    "ascii85": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/ascii85/-/ascii85-1.0.2.tgz",
      "integrity": "sha1-YhJUPUI2lE3r5IJ+yuZCd25BVEg="
    }
  }
}

package.json

{
  "dependencies": {
    "ascii85": "^1.0.2"
  }
}