How to interpret hex values from the sensor?

I am trying to read some sensor data from the DA14583 I just got. For that, I am using a Raspberry Pi 3 Model B which will establish a connection with the sensor.

Using gatttool on the Pi, I was able to connect to the device via bluetooth and I got some values from the temparature sensor (where 0x20 is the handler address of the respective sensor):

> handle: 0x0020, char properties: 0x10, char value handle: 0x0021, uuid: [omitted here]
$ char-read-hnd 0x20
> 10 21 00 06 24 40 3f 18 26 97 b0 bb 44 44 7d 70 89 a7 2e


The problem is, I don't know how to get a human readable temperature value from this.

Over at IBM's I found somecode snippet to convert hex into °C and °F。这是Python,但它可以很容易地converted to, for instance, JavaScript.

But that's for a different sensor and it only takes 4 hex blocks. I've tried it with any sequence from the above 19 hex blocks, but none gave me a reasonable value.

So, does anyone know how to convert these 19 hex blocks into a temparature between 20°C and 25°C (which it assumingly represents)? I'd be really grateful!