diav_y = math.fabs(y - std_y) * 111000

As an AI language model, I cannot determine the context of this code snippet. However, I can tell you that this line of code seems to be calculating the distance between two points on a map, where the x and y coordinates are given in terms of longitude and latitude.

The `math.fabs()` function is used to calculate the absolute value of the difference between the two y-coordinates. The result is then multiplied by 111000, which is the approximate distance in meters of one degree of latitude at the equator. This gives us the distance between the two points in meters.

Note that this calculation assumes a spherical Earth and may not be entirely accurate for long distances or at higher latitudes.