PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-06:27:40
G01     53.7           27.1                2.0 +/-    1.25       3.8 +/-    1.25  0.030 / 0.040
G06     177.9          19.2                4.2 +/-    1.48       9.5 +/-    1.48  0.040 / 0.050
G07     143.7          18.1                5.8 +/-    2.79      13.4 +/-    2.79  0.090 / 0.250
G11     47.2           23.6                2.9 +/-    0.77       5.8 +/-    0.77  0.100 / 0.240
G13     255.6          34.4                6.0 +/-    1.15       9.5 +/-    1.15  0.040 / 0.050
G15     287.2          16.9                4.7 +/-    1.75      11.2 +/-    1.75  0.040 / 0.040
G17     278.9          79.1                4.9 +/-    0.37       5.0 +/-    0.37  0.070 / 0.190
G19     237.3          57.2                4.6 +/-    1.04       5.4 +/-    1.04  0.070 / 0.190
G28     28.7           59.4                3.9 +/-    0.72       4.4 +/-    0.72  0.040 / 0.050
G30     147.7          51.5                7.1 +/-    0.43       8.8 +/-    0.43  0.030 / 0.060