ITEM: TIMESTEP 0 ITEM: NUMBER OF ATOMS 0 ITEM: BOX BOUNDS pp pp pp 0.0000000000000000e+00 4.0097861999999998e+02 0.0000000000000000e+00 5.4186300000000003e+00 0.0000000000000000e+00 1.5000000000000000e+03 ITEM: ATOMS id mol type q xs ys zs