{
  "chi2": 8002.565837680156,
  "n_params": 7,
  "aic": 8016.565837680156,
  "bic": 8038.59829901785,
  "elapsed_s": 10.105995667006937,
  "total_thick": 240.8595657407832,
  "surface_roughness": 11.057360647248696,
  "density_bulk": 1.3416923647486714,
  "density_vac": 1.2830850415249035,
  "density_si": 1.1272378296384002,
  "tau_vac": 6.669345427366935,
  "tau_si": 241.95966979209936,
  "surface_denser_than_bulk": false
}