long zExpected = Spatial.shuffle(space, lat.doubleValue(), lon.doubleValue());
assertEquals(zExpected, zActual);
Integer expectedId = zToId.get(zActual);
assertNotNull(expectedId);
assertEquals(expectedId.intValue(), id);
assertEquals(expectedHKey(id), row.hKey().toString());
long distance = abs(zExpected - zStart);
assertTrue(distance >= previousDistance);
previousDistance = distance;
actualIdByDistance.add(id);
}