PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-16:58:00
G01     248.1          33.7                9.5 +/-    0.97      15.4 +/-    0.97  0.070 / 0.220
G03     314.9          50.4                8.6 +/-    0.89      10.8 +/-    0.89  0.080 / 0.210
G11     238.0          11.3                9.9 +/-    2.71      26.9 +/-    2.71  0.030 / 0.040
G14     61.9           40.6                8.6 +/-    0.49      12.4 +/-    0.49  0.030 / 0.030
G16     161.8          20.9                8.0 +/-   15.88      17.2 +/-   15.88  0.040 / 0.050
G22     298.2          70.6                9.0 +/-    0.95       9.4 +/-    0.95  0.040 / 0.050
G23     289.6          22.7                8.9 +/-    1.99      18.5 +/-    1.99  0.060 / 0.110
G26     132.5          40.6               11.2 +/-    1.09      16.1 +/-    1.09  0.050 / 0.110
G31     40.6           54.5                7.7 +/-    0.60       9.3 +/-    0.60  0.090 / 0.170
G32     80.2           20.3                8.9 +/-    1.13      19.4 +/-    1.13  0.080 / 0.150