PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-17:57:50
G03     211.0          60.1               11.2 +/-    1.42      12.7 +/-    1.42  0.050 / 0.070
G07     253.5          12.0                9.4 +/-    8.92      25.2 +/-    8.92  0.040 / 0.060
G09     307.8          23.6               10.0 +/-    2.04      20.2 +/-    2.04  0.130 / 0.270
G14     105.8          10.8               10.3 +/-    1.96      28.3 +/-    1.96  0.280 / 0.430
G16     107.3          63.8               13.1 +/-    1.32      14.4 +/-    1.32  0.030 / 0.040
G22     187.7          44.7               10.8 +/-    0.85      14.7 +/-    0.85  0.040 / 0.030
G23     328.7          58.1               10.7 +/-    0.72      12.4 +/-    0.72  0.060 / 0.140
G31     57.2           12.4                7.5 +/-    1.28      19.9 +/-    1.28  0.110 / 0.110