PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-14:57:40
G02     223.0          61.7                9.0 +/-    1.31      10.1 +/-    1.31  0.050 / 0.050
G06     46.4           67.3                7.2 +/-    0.46       7.8 +/-    0.46  0.060 / 0.040
G12     321.3          45.6                6.8 +/-    1.08       9.1 +/-    1.08  0.040 / 0.050
G17     63.4           27.2                5.8 +/-    1.41      10.8 +/-    1.41  0.040 / 0.050
G19     41.6           48.7                7.8 +/-    1.29      10.0 +/-    1.29  0.060 / 0.090
G24     253.8          39.8                8.7 +/-    3.08      12.7 +/-    3.08  0.070 / 0.080
G28     126.4          9.5                11.8 +/-    2.15      33.2 +/-    2.15  0.060 / 0.050