Cross sections of the nitrogen atom in \AA$^2$ for the direct ionization, excitation-autoionization, total ionization from the ground level $2s^22p^3\ ^4$S and metastable $^2$D and $^2$P terms, and the cross section for the ground (70\%)--metastable (30\% $^2$D) mixture as functions of the incident electron energy $T$ in eV.} T & From $^4$S & \multicolumn{3}{c}{From $^2$D} & \multicolumn{3} {c}{From $^2$P} & 70/30 Mix \cline{3-5} \cline{6-8} & Total & Direct & Excitation & Total & Direct & Excitation & Total & \\ 12 & 0 & 0 & 0 & 0 & 0.00335 & 0.120 & 0.123 & 0 14 & 0 & 0.0499 & 0.224 & 0.274 & 0.0263 & 0.273 & 0.300 & 0.0822 16 & 0.0415 & 0.167 & 0.325 & 0.492 & 0.0706 & 0.411 & 0.481 & 0.177 18 & 0.132 & 0.303 & 0.381 & 0.684 & 0.121 & 0.540 & 0.661 & 0.298 20 & 0.235 & 0.433 & 0.417 & 0.849 & 0.169 & 0.653 & 0.822 & 0.419 25 & 0.464 & 0.703 & 0.463 & 1.166 & 0.268 & 0.870 & 1.137 & 0.675 30 & 0.669 & 0.925 & 0.481 & 1.406 & 0.344 & 1.026 & 1.370 & 0.890 35 & 0.843 & 1.110 & 0.485 & 1.594 & 0.408 & 1.151 & 1.559 & 1.068 40 & 0.979 & 1.251 & 0.482 & 1.733 & 0.458 & 1.243 & 1.700 & 1.205 45 & 1.084 & 1.359 & 0.475 & 1.834 & 0.495 & 1.309 & 1.804 & 1.309 50 & 1.166 & 1.441 & 0.467 & 1.907 & 0.523 & 1.356 & 1.879 & 1.389 60 & 1.278 & 1.548 & 0.446 & 1.995 & 0.560 & 1.411 & 1.971 & 1.493 70 & 1.343 & 1.606 & 0.426 & 2.031 & 0.578 & 1.432 & 2.010 & 1.550 80 & 1.378 & 1.632 & 0.405 & 2.037 & 0.587 & 1.432 & 2.019 & 1.576 90 & 1.394 & 1.638 & 0.387 & 2.025 & 0.588 & 1.421 & 2.008 & 1.583 100 & 1.396 & 1.631 & 0.369 & 2.001 & 0.584 & 1.401 & 1.985 & 1.577 120 & 1.377 & 1.596 & 0.338 & 1.934 & 0.570 & 1.351 & 1.921 & 1.544 150 & 1.321 & 1.517 & 0.300 & 1.817 & 0.540 & 1.266 & 1.806 & 1.470 180 & 1.255 & 1.432 & 0.270 & 1.702 & 0.509 & 1.183 & 1.692 & 1.389 200 & 1.210 & 1.377 & 0.254 & 1.630 & 0.489 & 1.132 & 1.620 & 1.336 250 & 1.105 & 1.250 & 0.220 & 1.470 & 0.443 & 1.018 & 1.461 & 1.215 300 & 1.014 & 1.142 & 0.195 & 1.337 & 0.404 & 0.925 & 1.328 & 1.111 350 & 0.935 & 1.051 & 0.175 & 1.226 & 0.371 & 0.846 & 1.218 & 1.022 400 & 0.868 & 0.972 & 0.159 & 1.132 & 0.343 & 0.781 & 1.124 & 0.947 450 & 0.810 & 0.905 & 0.146 & 1.052 & 0.319 & 0.725 & 1.044 & 0.882 500 & 0.759 & 0.848 & 0.136 & 0.983 & 0.299 & 0.677 & 0.976 & 0.826 600 & 0.675 & 0.752 & 0.118 & 0.871 & 0.265 & 0.599 & 0.864 & 0.734 700 & 0.609 & 0.677 & 0.105 & 0.783 & 0.238 & 0.538 & 0.776 & 0.661 800 & 0.555 & 0.617 & 0.095 & 0.712 & 0.217 & 0.489 & 0.705 & 0.602 900 & 0.510 & 0.566 & 0.087 & 0.653 & 0.199 & 0.448 & 0.647 & 0.553 1000 & 0.473 & 0.524 & 0.080 & 0.604 & 0.184 & 0.415 & 0.599 & 0.512 2000 & 0.278 & 0.307 & 0.046 & 0.352 & 0.107 & 0.241 & 0.348 & 0.300 3000 & 0.200 & 0.220 & 0.0325 & 0.253 & 0.0771 & 0.173 & 0.250 & 0.216 4000 & 0.158 & 0.173 & 0.0256 & 0.199 & 0.0606 & 0.136 & 0.197 & 0.170 5000 & 0.131 & 0.144 & 0.0212 & 0.165 & 0.0502 & 0.113 & 0.163 & 0.141