presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/BingTileFunctions.java/BingTileFunctions/longitudeToTileY
class BingTileFunctions:    private static int longitudeToTileY(double latitude, long mapSize)
    {
        double sinLatitude = Math.sin(latitude * Math.PI / 180);
        double y = 0.5 - Math.log((1 + sinLatitude) / (1 - sinLatitude)) / (4 * Math.PI);
        return axisToCoordinates(y, mapSize);
    }