Expression 4: "P" left parenthesis, "z" , right parenthesis equals "P" Subscript, 0 , Baseline times exponent left parenthesis, negative StartFraction, "z" Over 7 , EndFraction , right parenthesis left brace, "z" greater than 0 , right bracePz=P0·exp−z7z>0
4
Expression 5: "T" left parenthesis, "z" , right parenthesis equals left parenthesis, "T" Subscript, 0 , Baseline plus 273.1 5 , right parenthesis left parenthesis, StartFraction, "P" left parenthesis, "z" , right parenthesis Over "P" Subscript, 0 , Baseline , EndFraction , right parenthesis Superscript, 0.2 8 6 , Baseline minus 273.1 5 left brace, "z" greater than 0 , right braceTz=T0+273.15PzP00.286−273.15z>0