Rise and Fall times from IBIS model

The datasheet of the CPU we are working with doesn't have the data pertaining Rise and Fall times for its I/O interfaces. However we do have access to its IBIS model. Is there a way to calculate Rise and Fall times manually from IBIS model? It has the following under "Rising Waveform" section for one of its IO pins.

[Ramp] | variable typ min max dV/dt_r 0.7119/0.9108n 0.5716/1.2942n 0.8490/0.6909n dV/dt_f 0.7481/0.9966n 0.6208/1.4523n 0.8651/0.6529n R_load = 50.0000 | [Rising Waveform] R_fixture= 50.0000 V_fixture= 1.8000 V_fixture_min= 1.7000 V_fixture_max= 1.9000 |time V(typ) V(min) V(max) | 0.0S 0.5531V 0.6653V 0.4581V 0.30nS 0.5531V 0.6653V 0.4582V 0.61nS 0.5603V 0.6652V 0.5569V 0.91nS 1.1907V 0.7186V 1.6349V 1.21nS 1.7037V 1.3515V 1.8572V 1.52nS 1.7803V 1.6416V 1.8905V 1.82nS 1.7923V 1.6879V 1.8985V 2.12nS 1.7973V 1.6950V 1.9006V 2.42nS 1.7992V 1.6960V 1.9014V 2.73nS 1.8003V 1.6977V 1.9008V 3.03nS 1.8009V 1.6989V 1.9005V 3.33nS 1.8008V 1.6996V 1.9003V 3.64nS 1.8005V 1.7001V 1.9002V 3.94nS 1.8003V 1.7004V 1.9001V 4.24nS 1.8002V 1.7005V 1.9001V 4.55nS 1.8002V 1.7004V 1.9000V 4.85nS 1.8001V 1.7004V 1.9000V 5.15nS 1.8001V 1.7002V 1.9000V 5.45nS 1.8001V 1.7002V 1.9000V 5.76nS 1.8000V 1.7001V 1.9000V 6.06nS 1.8000V 1.7001V 1.9000V 6.36nS 1.8000V 1.7001V 1.9000V 6.67nS 1.8000V 1.7001V 1.9000V 6.97nS 1.8000V 1.7000V 1.9000V 7.27nS 1.8000V 1.7000V 1.9000V 7.58nS 1.8000V 1.7000V 1.9000V 7.88nS 1.8000V 1.7000V 1.9000V 8.18nS 1.8000V 1.7000V 1.9000V 8.48nS 1.8000V 1.7000V 1.9000V 8.79nS 1.8000V 1.7000V 1.9000V 9.09nS 1.8000V 1.7000V 1.9000V 9.39nS 1.8000V 1.7000V 1.9000V 9.70nS 1.8000V 1.7000V 1.9000V 10.00nS 1.8000V 1.7000V 1.9000V 10.30nS 1.8000V 1.7000V 1.9000V 10.61nS 1.8000V 1.7000V 1.9000V 10.91nS 1.8000V 1.7000V 1.9000V 11.21nS 1.8000V 1.7000V 1.9000V 11.52nS 1.8000V 1.7000V 1.9000V 11.82nS 1.8000V 1.7000V 1.9000V 12.12nS 1.8000V 1.7000V 1.9000V 12.42nS 1.8000V 1.7000V 1.9000V 12.73nS 1.8000V 1.7000V 1.9000V 13.03nS 1.8000V 1.7000V 1.9000V 13.33nS 1.8000V 1.7000V 1.9000V 13.64nS 1.8000V 1.7000V 1.9000V 13.94nS 1.8000V 1.7000V 1.9000V 14.24nS 1.8000V 1.7000V 1.9000V 14.55nS 1.8000V 1.7000V 1.9000V 14.85nS 1.8000V 1.7000V 1.9000V 15.15nS 1.8000V 1.7000V 1.9000V 15.45nS 1.8000V 1.7000V 1.9000V 15.76nS 1.8000V 1.7000V 1.9000V 16.06nS 1.8000V 1.7000V 1.9000V 16.36nS 1.8000V 1.7000V 1.9000V 16.67nS 1.8000V 1.7000V 1.9000V 16.97nS 1.8000V 1.7000V 1.9000V 17.27nS 1.8000V 1.7000V 1.9000V 17.58nS 1.8000V 1.7000V 1.9000V 17.88nS 1.8000V 1.7000V 1.9000V 18.18nS 1.8000V 1.7000V 1.9000V 18.48nS 1.8000V 1.7000V 1.9000V 18.79nS 1.8000V 1.7000V 1.9000V 19.09nS 1.8000V 1.7000V 1.9000V 19.39nS 1.8000V 1.7000V 1.9000V 19.70nS 1.8000V 1.7000V 1.9000V 20.00nS 1.8000V 1.7000V 1.9000V 20.30nS 1.8000V 1.7000V 1.9000V 20.61nS 1.8000V 1.7000V 1.9000V 20.91nS 1.8000V 1.7000V 1.9000V 21.21nS 1.8000V 1.7000V 1.9000V 21.52nS 1.8000V 1.7000V 1.9000V 21.82nS 1.8000V 1.7000V 1.9000V 22.12nS 1.8000V 1.7000V 1.9000V 22.42nS 1.8000V 1.7000V 1.9000V 22.73nS 1.8000V 1.7000V 1.9000V 23.03nS 1.8000V 1.7000V 1.9000V 23.33nS 1.8000V 1.7000V 1.9000V 23.64nS 1.8000V 1.7000V 1.9000V 23.94nS 1.8000V 1.7000V 1.9000V 24.24nS 1.8000V 1.7000V 1.9000V 24.55nS 1.8000V 1.7000V 1.9000V 24.85nS 1.8000V 1.7000V 1.9000V 25.15nS 1.8000V 1.7000V 1.9000V 25.45nS 1.8000V 1.7000V 1.9000V 25.76nS 1.8000V 1.7000V 1.9000V 26.06nS 1.8000V 1.7000V 1.9000V 26.36nS 1.8000V 1.7000V 1.9000V 26.67nS 1.8000V 1.7000V 1.9000V 26.97nS 1.8000V 1.7000V 1.9000V 27.27nS 1.8000V 1.7000V 1.9000V 27.58nS 1.8000V 1.7000V 1.9000V 27.88nS 1.8000V 1.7000V 1.9000V 28.18nS 1.8000V 1.7000V 1.9000V 28.48nS 1.8000V 1.7000V 1.9000V 28.79nS 1.8000V 1.7000V 1.9000V 29.09nS 1.8000V 1.7000V 1.9000V 29.39nS 1.8000V 1.7000V 1.9000V 29.70nS 1.8000V 1.7000V 1.9000V 30.00nS 1.8000V 1.7000V 1.9000V | [Rising Waveform] R_fixture= 50.0000 V_fixture= 0.0 |time V(typ) V(min) V(max) | 0.0S 0.0V 0.0V 0.0V 0.30nS -4.0796uV 0.0V 23.3469uV 0.61nS -3.1206mV 0.1843mV -13.6015mV 0.91nS -23.2281mV -6.2934mV -14.6234mV 1.21nS -7.8864mV -17.5140mV -3.4058mV 1.52nS -2.5034mV -5.8120mV 0.1324V 1.82nS 37.8071mV -2.7467mV 0.5758V 2.12nS 0.2223V -0.5639mV 0.9589V 2.42nS 0.5115V 22.5685mV 1.2283V 2.73nS 0.7446V 0.1129V 1.3339V 3.03nS 0.9388V 0.2638V 1.3732V 3.33nS 1.0572V 0.4242V 1.3928V 3.64nS 1.1161V 0.5623V 1.4025V 3.94nS 1.1474V 0.6855V 1.4077V 4.24nS 1.1632V 0.7780V 1.4106V 4.55nS 1.1716V 0.8408V 1.4124V 4.85nS 1.1778V 0.8833V 1.4135V 5.15nS 1.1810V 0.9052V 1.4140V 5.45nS 1.1830V 0.9241V 1.4144V 5.76nS 1.1842V 0.9333V 1.4147V 6.06nS 1.1850V 0.9406V 1.4148V 6.36nS 1.1856V 0.9443V 1.4148V 6.67nS 1.1859V 0.9480V 1.4149V 6.97nS 1.1861V 0.9494V 1.4150V 7.27nS 1.1862V 0.9505V 1.4150V 7.58nS 1.1864V 0.9512V 1.4150V 7.88nS 1.1864V 0.9517V 1.4150V 8.18nS 1.1864V 0.9520V 1.4150V 8.48nS 1.1864V 0.9522V 1.4150V 8.79nS 1.1865V 0.9523V 1.4150V 9.09nS 1.1865V 0.9524V 1.4150V 9.39nS 1.1865V 0.9525V 1.4150V 9.70nS 1.1865V 0.9526V 1.4150V 10.00nS 1.1865V 0.9526V 1.4150V 10.30nS 1.1865V 0.9526V 1.4150V 10.61nS 1.1865V 0.9527V 1.4150V 10.91nS 1.1865V 0.9527V 1.4150V 11.21nS 1.1865V 0.9527V 1.4150V 11.52nS 1.1865V 0.9527V 1.4150V 11.82nS 1.1865V 0.9527V 1.4150V 12.12nS 1.1865V 0.9527V 1.4150V 12.42nS 1.1865V 0.9527V 1.4150V 12.73nS 1.1865V 0.9527V 1.4150V 13.03nS 1.1865V 0.9527V 1.4150V 13.33nS 1.1865V 0.9527V 1.4150V 13.64nS 1.1865V 0.9527V 1.4150V 13.94nS 1.1865V 0.9527V 1.4150V 14.24nS 1.1865V 0.9527V 1.4150V 14.55nS 1.1865V 0.9527V 1.4150V 14.85nS 1.1865V 0.9527V 1.4150V 15.15nS 1.1865V 0.9527V 1.4150V 15.45nS 1.1865V 0.9527V 1.4150V 15.76nS 1.1865V 0.9527V 1.4150V 16.06nS 1.1865V 0.9527V 1.4150V 16.36nS 1.1865V 0.9527V 1.4150V 16.67nS 1.1865V 0.9527V 1.4150V 16.97nS 1.1865V 0.9527V 1.4150V 17.27nS 1.1865V 0.9527V 1.4150V 17.58nS 1.1865V 0.9527V 1.4150V 17.88nS 1.1865V 0.9527V 1.4150V 18.18nS 1.1865V 0.9527V 1.4150V 18.48nS 1.1865V 0.9527V 1.4150V 18.79nS 1.1865V 0.9527V 1.4150V 19.09nS 1.1865V 0.9527V 1.4150V 19.39nS 1.1865V 0.9527V 1.4150V 19.70nS 1.1865V 0.9527V 1.4150V 20.00nS 1.1865V 0.9527V 1.4150V 20.30nS 1.1865V 0.9527V 1.4150V 20.61nS 1.1865V 0.9527V 1.4150V 20.91nS 1.1865V 0.9527V 1.4150V 21.21nS 1.1865V 0.9527V 1.4150V 21.52nS 1.1865V 0.9527V 1.4150V 21.82nS 1.1865V 0.9527V 1.4150V 22.12nS 1.1865V 0.9527V 1.4150V 22.42nS 1.1865V 0.9527V 1.4150V 22.73nS 1.1865V 0.9527V 1.4150V 23.03nS 1.1865V 0.9527V 1.4150V 23.33nS 1.1865V 0.9527V 1.4150V 23.64nS 1.1865V 0.9527V 1.4150V 23.94nS 1.1865V 0.9527V 1.4150V 24.24nS 1.1865V 0.9527V 1.4150V 24.55nS 1.1865V 0.9527V 1.4150V 24.85nS 1.1865V 0.9527V 1.4150V 25.15nS 1.1865V 0.9527V 1.4150V 25.45nS 1.1865V 0.9527V 1.4150V 25.76nS 1.1865V 0.9527V 1.4150V 26.06nS 1.1865V 0.9527V 1.4150V 26.36nS 1.1865V 0.9527V 1.4150V 26.67nS 1.1865V 0.9527V 1.4150V 26.97nS 1.1865V 0.9527V 1.4150V 27.27nS 1.1865V 0.9527V 1.4150V 27.58nS 1.1865V 0.9527V 1.4150V 27.88nS 1.1865V 0.9527V 1.4150V 28.18nS 1.1865V 0.9527V 1.4150V 28.48nS 1.1865V 0.9527V 1.4150V 28.79nS 1.1865V 0.9527V 1.4150V 29.09nS 1.1865V 0.9527V 1.4150V 29.39nS 1.1865V 0.9527V 1.4150V 29.70nS 1.1865V 0.9527V 1.4150V 30.00nS 1.1865V 0.9527V 1.4150V