% freq (Hz) real(acpr.rho_c) (kg/m^3) imag(acpr.rho_c) (kg/m^3) 50 1.797652993442282 -14.335907517233464 53 1.797592750056724 -13.525832681193593 56 1.7975290445192655 -12.802627564045942 60 1.79743873199814 -11.950962768585317 63 1.7973669796591811 -11.383264744081632 67 1.7972659695137645 -10.705514560835562 71 1.7971588765203477 -10.104236253807601 75 1.797045724143641 -9.56719404856349 80 1.796895800434744 -8.971543943141606 85 1.7967364986226468 -8.446106916741941 90 1.7965678726348786 -7.9791802633758495 95 1.7963899792911429 -7.5615249775140185 100 1.7962028782405925 -7.185749829463194 106 1.795966290875453 -6.781756282517351 112 1.7957166473921804 -6.421193517207535 118 1.7954540661690084 -6.097435614271535 125 1.7951315347383316 -5.759163527492127 132 1.7947917670144407 -5.45693354121842 140 1.794382630145707 -5.148724074279922 150 1.793840452173386 -4.809954635313402 160 1.793264735932257 -4.513799690550457 170 1.7926561919683057 -4.2527353099837155 180 1.7920155588288176 -4.020909399309902 190 1.791343600338061 -3.8137017546382883 200 1.7906411028671132 -3.6274161008522334 212 1.7897589308140236 -3.4273169001313755 224 1.7888353696501778 -3.2489051783384033 236 1.7878718735465484 -3.088867071763618 250 1.786699292570644 -2.9218411739111207 265 1.7853875645434298 -2.762761159191282 280 1.7840214104234748 -2.621002221547247 300 1.7821203013295654 -2.454427742179397 315 1.7806385961819393 -2.3436424985471835 335 1.7785940126652875 -2.211677494293093 355 1.776476796789883 -2.094905743489785 375 1.7742935485978109 -1.990879289917829 400 1.771481346643906 -1.8758329713161004 425 1.7685878963051667 -1.7746698428833694 450 1.7656245061956286 -1.6850505890357341 475 1.762601791482851 -1.6051294240607046 500 1.7595296482412175 -1.533430782491564 530 1.755790688497289 -1.4565816927045865 560 1.7520081872390194 -1.3882087912256624 600 1.746919415650054 -1.3079901618391674 630 1.743083542484788 -1.254704360604293 670 1.737962149271371 -1.1912871893185706 710 1.7328512067887483 -1.135206121982433 750 1.7277675956999874 -1.0852565805738794 800 1.721472497667939 -1.0300024884115273 850 1.7152633735583123 -0.9813773508563596 900 1.7091566965750016 -0.93824392914147 950 1.7031646608478745 -0.8997091577116215 1000 1.697295978628368 -0.8650624522221549 1060 1.6904245341443815 -0.8278209346550616 1120 1.6837451159881744 -0.7945694005134504 1180 1.6772601934337763 -0.7646820976407409 1250 1.6699399082998747 -0.7334020681535506 1320 1.662880429947043 -0.7053864610497603 1400 1.6551239094522345 -0.6767235049738255 1500 1.645878051179426 -0.6450718243924728 1600 1.637107307865047 -0.6172355952851775 1700 1.6287837150208913 -0.5925327069978396 1800 1.6208791020064393 -0.5704361156032955 1900 1.6133660046211018 -0.5505321139511072 2000 1.6062181899646037 -0.5324913623643378 2120 1.5980882859510834 -0.5129317109318631 2240 1.5904092392717368 -0.4953076699071332 2360 1.5831448130160906 -0.47932725986526187 2500 1.5751498714932866 -0.46244996083444445 2650 1.5671070181142233 -0.4461581239601859 2800 1.5595551556098568 -0.4314350161651755 3000 1.5501719572562496 -0.4138495766400748 3150 1.5435979206909844 -0.40195931358089226 3350 1.53538523910756 -0.38756404656971677 3550 1.527740009068823 -0.37458851219472133 3750 1.5206015475676047 -0.36281640462961495 4000 1.5123121604432674 -0.3495329186447655 4250 1.5046464652573255 -0.3375929539085157 4500 1.497531351867984 -0.32678623560495385 4750 1.4909049311269342 -0.316945544186967 5000 1.4847144659856786 -0.3079360676179243