Input for ptrack*
1 nscreen
0 mod_part (0: passive; 1: oil spill)
1 ibf
0 istiff
1 -122.6 37.38 ics slam0 sfea0
0.01 140. 120. 30 720 40 !h0,rnday,dtm,nspool,ihfskip,ndeltp
2 !# of particles
1   0.432000000E+05   0.334902000E+06   0.293906000E+06  0. !particle ID, starting time in sec, starting x,y,z (<=0, relative to the instantaneous surface)
2   0.864000000E+05   0.334902000E+06   0.293906000E+06  0.
!Oil spill parameters
1  3.0  0.2           !ihdf,hdc,horcon
1  0                  !ibuoy,iwind
20.0                  !pbeach