2-byte Divergence Format (DB_DIVERGE2)
Divergence is stored in a signed 16-bits number scaled to 10**-7. Positive numbers indicate divergence, negative are convergence. These number are normally displayed in units of 10**-4.
| -32768 | 32.768 10**-4 convergence |
| 0 | 0 divergence |
| 1 | 0.001 10**-4 divergence |
| 32766 | 32.766 10**-4 divergence |
| 32767 | Area not scanned |