2-byte Floating Liquid Format (DB_FLIQUID2)
Rainfall accumulations are stored in 16-bit floating-point representation of a 27-bit integer in units of 0.001 mm.
This product does not have a code for thresholded data, instead that area is assumed to have zero rain.
The floating-point number consists of a 4-bit exponent in the high four bits, followed by a 12-bit mantissa. It uses implied digits and soft underflow. If the exponent is 0, the mantissa consists of the value. If the exponent is 1 through 15, the 12-bit mantissa has a 1 prefixed to it and is shifted up by one less than the exponent. The table below gives some examples:
| Float | Fixed | Meaning | |
|---|---|---|---|
| 0 | —> | 0 | 0.000 mm |
| 1 | —> | 1 | 0.001 mm |
| 255 | —> | 255 | 0.255 mm |
| 1000 | —> | 1000 | 1.000 mm |
| 9096 | —> | 10000 | 10.000 mm |
| 22634 | —> | 100000 | 100.000 mm |
| 34922 | —> | 800000 | 800.000 mm |
| 50000 | —> | 10125312 | 10125.312 mm |
| 65534 | —> | 134184960 | 134184.960 mm or above |
| 65535 | —> | Area not scanned |