Small incorrect value

Everything seems to be all right except for one small thing.
If I set wonders in meters per second in WD, everything is fine and WD copies the same values as the console.
However, when I switch to WD per kilometer per hour, the first figure reports a wind impact of 1.6 km / h, which is an incorrect figure.
WDL reports even 1.7 km / h.
All other data already have the correct calculation.
If VP2 shows a wind impact of 0.4 m / s, it is equal to 1.44 km / h and not 1.6 or 1.7 km / h as reported by WD or WDL.