PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-12:27:50
G01     250.0          34.7                4.9 +/-    1.18       7.8 +/-    1.18  0.040 / 0.100
G03     315.6          46.9                3.5 +/-    1.39       4.5 +/-    1.39  0.050 / 0.090
G11     237.7          11.9                3.0 +/-    3.28       8.0 +/-    3.28  0.100 / 0.210
G14     58.0           43.7                4.2 +/-    0.56       5.8 +/-    0.56  0.060 / 0.040
G18     220.9          27.0                4.7 +/-    1.81       8.8 +/-    1.81  0.060 / 0.040
G22     298.2          72.4                5.6 +/-    1.01       5.8 +/-    1.01  0.050 / 0.030
G23     289.8          24.5               -2.7 +/-    2.60      -5.3 +/-    2.60  0.050 / 0.020
G26     132.8          39.6                6.0 +/-    0.70       8.8 +/-    0.70  0.110 / 0.600
G31     41.1           55.0                5.3 +/-    0.51       6.3 +/-    0.51  0.090 / 0.680
G32     79.1           20.8                4.3 +/-    1.50       9.4 +/-    1.50  0.040 / 0.040