PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-17:57:30
G02     40.7           49.3                7.2 +/-    1.15       9.1 +/-    1.15  0.030 / 0.020
G05     113.0          69.3                7.9 +/-    0.97       8.4 +/-    0.97  0.030 / 0.030
G12     183.9          50.4                8.9 +/-    0.68      11.2 +/-    0.68  0.030 / 0.040
G25     273.4          59.0               11.3 +/-    0.75      12.9 +/-    0.75  0.030 / 0.060
G29     314.5          35.6                7.4 +/-    1.56      11.7 +/-    1.56  0.040 / 0.050