### IASP91

| Depth ({math}`km`) | Vp ({math}`km/s`)  | Vs ({math}`km/s`)  | Density ({math}`g/cm^3`)    |
|---------|---------|--------|---------|
| 0       | 5.8     | 3.36   | 2.72    |
| 20      | 5.8     | 3.36   | 2.72    |
| 20      | 6.5     | 3.75   | 2.92    |
| 35      | 6.5     | 3.75   | 2.92    |
| 35      | 8.04    | 4.47   | 3.3198  |
| 77.5    | 8.045   | 4.485  | 3.3455  |
| 120     | 8.05    | 4.5    | 3.3713  |
| 165     | 8.175   | 4.509  | 3.3985  |
| 210     | 8.3     | 4.518  | 3.4258  |
| 210     | 8.3     | 4.522  | 3.4258  |
| 260     | 8.4825  | 4.609  | 3.4561  |
| 310     | 8.665   | 4.696  | 3.4864  |
| 360     | 8.8475  | 4.783  | 3.5167  |
| 410     | 9.03    | 4.87   | 3.547   |
| 410     | 9.36    | 5.07   | 3.7557  |
| 460     | 9.528   | 5.176  | 3.8175  |
| 510     | 9.696   | 5.282  | 3.8793  |
| 560     | 9.864   | 5.388  | 3.941   |
| 610     | 10.032  | 5.494  | 4.0028  |
| 660     | 10.2    | 5.6    | 4.0646  |
| 660     | 10.79   | 5.95   | 4.3714  |
| 710     | 10.9229 | 6.0797 | 4.401   |
| 760     | 11.0558 | 6.2095 | 4.4305  |
| 809.5   | 11.144  | 6.2474 | 4.4596  |
| 859     | 11.23   | 6.2841 | 4.4885  |
| 908.5   | 11.314  | 6.3199 | 4.5173  |
| 958     | 11.396  | 6.3546 | 4.5459  |
| 1007.5  | 11.4761 | 6.3883 | 4.5744  |
| 1057    | 11.5543 | 6.4211 | 4.6028  |
| 1106.5  | 11.6308 | 6.453  | 4.631   |
| 1156    | 11.7056 | 6.4841 | 4.6591  |
| 1205.5  | 11.7787 | 6.5143 | 4.687   |
| 1255    | 11.8504 | 6.5438 | 4.7148  |
| 1304.5  | 11.9205 | 6.5725 | 4.7424  |
| 1354    | 11.9893 | 6.6006 | 4.7699  |
| 1403.5  | 12.0568 | 6.628  | 4.7973  |
| 1453    | 12.1231 | 6.6547 | 4.8245  |
| 1502.5  | 12.1881 | 6.6809 | 4.8515  |
| 1552    | 12.2521 | 6.7066 | 4.8785  |
| 1601.5  | 12.3151 | 6.7317 | 4.9052  |
| 1651    | 12.3772 | 6.7564 | 4.9319  |
| 1700.5  | 12.4383 | 6.7807 | 4.9584  |
| 1750    | 12.4987 | 6.8046 | 4.9847  |
| 1799.5  | 12.5584 | 6.8282 | 5.0109  |
| 1849    | 12.6174 | 6.8514 | 5.037   |
| 1898.5  | 12.6759 | 6.8745 | 5.0629  |
| 1948    | 12.7339 | 6.8972 | 5.0887  |
| 1997.5  | 12.7915 | 6.9199 | 5.1143  |
| 2047    | 12.8487 | 6.9423 | 5.1398  |
| 2096.5  | 12.9057 | 6.9647 | 5.1652  |
| 2146    | 12.9625 | 6.987  | 5.1904  |
| 2195.5  | 13.0192 | 7.0093 | 5.2154  |
| 2245    | 13.0758 | 7.0316 | 5.2403  |
| 2294.5  | 13.1325 | 7.054  | 5.2651  |
| 2344    | 13.1892 | 7.0765 | 5.2898  |
| 2393.5  | 13.2462 | 7.0991 | 5.3142  |
| 2443    | 13.3034 | 7.1218 | 5.3386  |
| 2492.5  | 13.361  | 7.1449 | 5.3628  |
| 2542    | 13.419  | 7.1681 | 5.3869  |
| 2591.5  | 13.4774 | 7.1917 | 5.4108  |
| 2641    | 13.5364 | 7.2156 | 5.4345  |
| 2690.5  | 13.5961 | 7.2398 | 5.4582  |
| 2740    | 13.6564 | 7.2645 | 5.4817  |
| 2740    | 13.6564 | 7.2645 | 5.4817  |
| 2789.67 | 13.6679 | 7.2768 | 5.5051  |
| 2839.33 | 13.6793 | 7.2892 | 5.5284  |
| 2889    | 13.6908 | 7.3015 | 5.5515  |
| 2889    | 8.0088  | 0      | 9.9145  |
| 2939.33 | 8.0963  | 0      | 9.9942  |
| 2989.66 | 8.1821  | 0      | 10.0722 |
| 3039.99 | 8.2662  | 0      | 10.1485 |
| 3090.32 | 8.3486  | 0      | 10.2233 |
| 3140.66 | 8.4293  | 0      | 10.2964 |
| 3190.99 | 8.5083  | 0      | 10.3679 |
| 3241.32 | 8.5856  | 0      | 10.4378 |
| 3291.65 | 8.6611  | 0      | 10.5062 |
| 3341.98 | 8.735   | 0      | 10.5731 |
| 3392.31 | 8.8072  | 0      | 10.6385 |
| 3442.64 | 8.8776  | 0      | 10.7023 |
| 3492.97 | 8.9464  | 0      | 10.7647 |
| 3543.3  | 9.0134  | 0      | 10.8257 |
| 3593.64 | 9.0787  | 0      | 10.8852 |
| 3643.97 | 9.1424  | 0      | 10.9434 |
| 3694.3  | 9.2043  | 0      | 11.0001 |
| 3744.63 | 9.2645  | 0      | 11.0555 |
| 3794.96 | 9.323   | 0      | 11.1095 |
| 3845.29 | 9.3798  | 0      | 11.1623 |
| 3895.62 | 9.4349  | 0      | 11.2137 |
| 3945.95 | 9.4883  | 0      | 11.2639 |
| 3996.28 | 9.54    | 0      | 11.3127 |
| 4046.62 | 9.59    | 0      | 11.3604 |
| 4096.95 | 9.6383  | 0      | 11.4069 |
| 4147.28 | 9.6848  | 0      | 11.4521 |
| 4197.61 | 9.7297  | 0      | 11.4962 |
| 4247.94 | 9.7728  | 0      | 11.5391 |
| 4298.27 | 9.8143  | 0      | 11.5809 |
| 4348.6  | 9.854   | 0      | 11.6216 |
| 4398.93 | 9.892   | 0      | 11.6612 |
| 4449.26 | 9.9284  | 0      | 11.6998 |
| 4499.6  | 9.963   | 0      | 11.7373 |
| 4549.93 | 9.9959  | 0      | 11.7737 |
| 4600.26 | 10.0271 | 0      | 11.8092 |
| 4650.59 | 10.0566 | 0      | 11.8437 |
| 4700.92 | 10.0844 | 0      | 11.8772 |
| 4751.25 | 10.1105 | 0      | 11.9098 |
| 4801.58 | 10.1349 | 0      | 11.9414 |
| 4851.91 | 10.1576 | 0      | 11.9722 |
| 4902.24 | 10.1785 | 0      | 12.0021 |
| 4952.58 | 10.1978 | 0      | 12.0311 |
| 5002.91 | 10.2154 | 0      | 12.0593 |
| 5053.24 | 10.2312 | 0      | 12.0867 |
| 5103.57 | 10.2454 | 0      | 12.1133 |
| 5153.9  | 10.2578 | 0      | 12.1391 |
| 5153.9  | 11.0914 | 3.4385 | 12.7037 |
| 5204.61 | 11.1036 | 3.4488 | 12.7289 |
| 5255.32 | 11.1153 | 3.4587 | 12.753  |
| 5306.04 | 11.1265 | 3.4681 | 12.776  |
| 5356.75 | 11.1371 | 3.477  | 12.798  |
| 5407.46 | 11.1472 | 3.4856 | 12.8188 |
| 5458.17 | 11.1568 | 3.4937 | 12.8387 |
| 5508.89 | 11.1659 | 3.5013 | 12.8574 |
| 5559.6  | 11.1745 | 3.5085 | 12.8751 |
| 5610.31 | 11.1825 | 3.5153 | 12.8917 |
| 5661.02 | 11.1901 | 3.5217 | 12.9072 |
| 5711.74 | 11.1971 | 3.5276 | 12.9217 |
| 5762.45 | 11.2036 | 3.533  | 12.9351 |
| 5813.16 | 11.2095 | 3.5381 | 12.9474 |
| 5863.87 | 11.215  | 3.5427 | 12.9586 |
| 5914.59 | 11.2199 | 3.5468 | 12.9688 |
| 5965.3  | 11.2243 | 3.5505 | 12.9779 |
| 6016.01 | 11.2282 | 3.5538 | 12.9859 |
| 6066.72 | 11.2316 | 3.5567 | 12.9929 |
| 6117.44 | 11.2345 | 3.5591 | 12.9988 |
| 6168.15 | 11.2368 | 3.561  | 13.0036 |
| 6218.86 | 11.2386 | 3.5626 | 13.0074 |
| 6269.57 | 11.2399 | 3.5637 | 13.01   |
| 6320.29 | 11.2407 | 3.5643 | 13.0117 |
| 6371    | 11.2409 | 3.5645 | 13.0122 |