Maybe they divided the values by 10000. Who knows🤷‍♂️?

The 10000 doesnt add up. Have you tried that yourself ?

I think since most Sentinel-2 Level-1C and Level-2A products are delivered as UInt16 (unsigned 16-bit integers) and range is basically around 0–65535. If that's the case, the actual reflectance values are typically scaled by a factor of 10,000.

So imagine B_Red has a band value of 65000 (which is very extreme😅), after scaling, you've got 6.5.

@Koleshjr, I would love to know what made you conclude on it not adding up?

But as I said the 65000 band value is extremely rare😅 and I was also quite surprised to see values exceeding 1 at first. But technically, I think it is possible. (Don't know much though😅)

Where did you get the 65000 from, ? The 10000 is supposed to reflect reflectance value which ranges from 0 to 1 , the reflectance value cant be more than 1

I was just trying to give an example😅. Never mind😭😭.

Read it here:

https://gis.stackexchange.com/questions/233874/what-is-the-range-of-values-of-sentinel-2-level-2a-images