proj4.defs("EPSG:8101","+proj=tmerc +lat_0=42.5694444444444 +lon_0=-88.225 +k=1.0000346179 +x_0=208788.418 +y_0=0.0034 +ellps=GRS80 +towgs84=-0.991,1.9072,0.5129,-1.25033e-07,-4.6785e-08,-5.6529e-08,0 +units=m +no_defs +type=crs");