|   武汉站 超导重力仪  |       M2波  |       S2波  |    |||
|   δ  |       Δφ  |       δ  |       Δφ  |    ||
|   Observed  |       1.1753  |       −0.27  |       1.1715  |       −0.36  |    |
|   SCW80  |       1.1654  |       −0.16  |       1.1630  |       −0.27  |    |
|   CSR3.0  |       1.1648  |       −0.12  |       1.1606  |       −0.16  |    |
|   CSR4.0  |       1.1650  |       0.07  |       1.1638  |       −0.06  |    |
|   FES95.2  |       1.1720  |       0.22  |       1.1649  |       0.12  |    |
|   FES99  |       1.1694  |       −0.00  |       1.1650  |       −0.12  |    |
|   FES02  |       1.1636  |       0.10  |       1.1617  |       −0.03  |    |
|   TPX02  |       1.1634  |       0.17  |       1.1648  |       0.10  |    |
|   ORI96  |       1.1627  |       −0.04  |       1.1610  |       −0.07  |    |
|   AG95  |       1.1682  |       −0.01  |       1.1615  |       −0.03  |    |
|   GOT00  |       1.1637  |       0.06  |       1.1641  |       −0.09  |    |
|   NAO99  |       1.1634  |       0.08  |       1.1637  |       −0.06  |    |