PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-03:57:50
G03     260.1          70.2                4.4 +/-    0.46       4.6 +/-    0.46  0.150 / 0.260
G09     299.9          14.5                2.2 +/-    1.63       5.6 +/-    1.63  0.130 / 0.210
G14     93.5           20.2                5.5 +/-    2.26      12.1 +/-    2.26  0.050 / 0.060
G16     133.4          53.8                7.9 +/-    0.54       9.5 +/-    0.54  0.040 / 0.060
G22     204.3          62.3                5.9 +/-    0.39       6.5 +/-    0.39  0.090 / 0.210
G23     316.1          46.2                4.3 +/-    0.62       5.6 +/-    0.62  0.100 / 0.290
G26     78.7           53.3                5.1 +/-    0.63       6.2 +/-    0.63  0.030 / 0.040
G31     49.9           22.7                3.2 +/-    2.34       6.6 +/-    2.34  0.030 / 0.050