Perturber m m_a(Da) m_p(Da) d_a(pm) d_p(pm) HWHH(cm-1 atm-1)_296K T_min(K) KCl 4 75.93 73.93 433 433 0.0634 * 816 Ar 10 75.93 39.96 433 333 0.0371 * 313 CH4 10 75.93 16.03 433 380 0.0587 * 338 CO 4 75.93 27.99 433 376 0.0748 * 286 CO2 6 75.93 43.99 433 330 0.0428 * 404 H2 6 75.93 2.02 433 292 0.1455 * 169 H2O 4 75.93 18.01 433 265 0.0660 * 433 He 10 75.93 4.00 433 258 0.0792 * 90 N2 6 75.93 28.01 433 368 0.0550 * 263 NH3 4 75.93 17.03 433 260 0.0666 * 386 NO 4 75.93 30.00 433 317 0.0627 * 326 O2 6 75.93 31.99 433 346 0.0496 * 300