volume_dat2.c reading bull.dat 
status=0, zmax=3177.82, points=6202, polys=12398 

xmin=-2060.574463, xmax=1978.578857, ymin=-1580.072998, ymax=1429.878052 
zmin=356.500702, zmax=3177.816406 
enclosing area= 6.40908e+07, enclosing volume= 3.43006e+10 

final total area = 2.07025e+07, total volume = 3.64616e+09