Facing issue while accucheck guide(Glucometer) meter data conversion

[amitturakSDN]

Hello,
I have implemented the Accu-Chek glucometer guide device and obtained the following values: [27, 15, 0, 232, 7, 1, 30, 5, 58, 27, 83, 1, 111, 176, 248, 0, 0]. I then converted these values into a string using bytesToString and received the result 'o°ø'. However, the actual value displayed on the device is 6.2, while I am currently obtaining 1.5. Can you please assist me in obtaining the correct values?

my code is
const binaryString = bytesToString(device.value);
console.log(binaryString,'binaryString>>>>>>');
const glucose_in_decimal =
binaryString.charCodeAt(2) * 256 + binaryString.charCodeAt(1);
const glucose = glucose_in_decimal / 10;
console.log(glucose, 'Parsed blood glucose data>>>>');

    my output in console
        {"characteristic": "00002a18-0000-1000-8000-00805f9b34fb", "peripheral": "6C:30:2A:20:BD:63", "service": "00001808-0000-1000-8000-00805f9b34fb", "value": [27, 15, 0, 232, 7, 1, 30, 5, 58, 27, 83, 1, 111, 176, 248, 0, 0]} handleUpdateValueForCharacteristic>>
 LOG  [27, 15, 0, 232, 7, 1, 30, 5, 58, 27, 83, 1, 111, 176, 248, 0, 0] device.value>>>>>
 LOG  :o°ø binaryString>>>>>>
 LOG  1.5 Parsed blood glucose data>>>>

The Accu-Chek glucometer device is displaying a reading of 6.2, and this is the value I am seeking.