I have a copy of the world map kit from mid last year that is ~157GB in size. File name is: WorldMapKit-4326-20160410-475173519.sqlite. One of my recently retired developers was testing your extractor and generated a couple different versions of the north east that include areas from NY to Maine and the file sizes are 5.7GB. I was just trying to extract an area around Louisiana and the output was around ~120GB! Any idea what is happening here? Here are my parameters:
Top Left: -94.15745, 31.28368
Bottom Right: -88.70107, 28.76017
SRID 4326
Thanks,
-Dave