new_contents: import paths
  from ratio_cubes import (ratio303321, eratio303321,
                           ratio303321sm, eratio303321sm,
                           ratiocube_303321,
                           ratiocubesm_303321,
                          )
  from masked_cubes import (cube303, cube303sm, cube303m, cube321m, cube303msm,
                            cube321msm, cube321, cube321sm, bmask, bmasksm, mask,
                            masksm, bmasksm_rs)
  from noise import (noise, noise_cube, sm_noise, cube303nm, cube303nmsm,
                     cube321nm, cube321nmsm)
  
  
  def make_ratio_integ():
      integ303321b = cube321.with_mask(bmasksm_rs).sum(axis=0)/cube303.with_mask(bmasksm_rs).sum(axis=0)
      hdu = cube321[0,:,:].hdu
      hdu.data = integ303321b.value
      hdu.writeto(paths.hpath('H2CO_321220_to_303202_integ_smoothmask.fits'))
  
                                
  
subject: add an integrated ratio map maker using the more aggressive mask