{
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      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
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      "type": "pV"
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      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "Tmax": 477.49999999999903, 
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      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "Tmax": 477.49999999999903, 
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      "max_abserror_percentage": 0.018460232880523897, 
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      "type": "pL"
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    "rhoL": {
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      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "Tmax": 477.49999999999903, 
      "using_tau_r": false, 
      "max_abserror_percentage": 0.76667989709326978, 
      "t": [
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        18.242
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      "type": "rhoLnoexp"
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}