The spatial data were from various sources.  Data are projected by using the World Geodetic System of 1984 (WGS84) datum and the Universal Transverse Mercator (UTM) Zone 15N coordinate system.

SIM_3164_spatial_data.zip contains the following compressed files:

	SIM_3164_1932_2010_loss_gain_spatial_data.img
	SIM_3164_1932_2010_loss_gain_spatial_data.rrd

These data require Geographic Information System software to be viewed correctly.