PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-14:27:50
G08     290.3          22.0                6.0 +/-    0.86      12.7 +/-    0.86  0.080 / 0.110
G10     17.7           63.2                4.6 +/-    0.92       5.1 +/-    0.92  0.080 / 0.090
G14     234.8          49.5                7.2 +/-    2.55       9.1 +/-    2.55  0.190 / 0.290
G21     148.2          32.7                7.9 +/-    0.68      13.1 +/-    0.68  0.100 / 0.240
G24     52.2           23.7                5.1 +/-    2.73      10.2 +/-    2.73  0.050 / 0.110
G27     248.0          28.6                5.2 +/-    2.01       9.4 +/-    2.01  0.050 / 0.090
G31     182.5          11.2               -0.9 +/-   16.46      -2.3 +/-   16.46  0.070 / 0.110
G32     259.6          72.1                4.8 +/-    0.56       5.0 +/-    0.56  0.080 / 0.070