PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-15:27:50
G02     204.8          33.7               10.8 +/-    1.57      17.6 +/-    1.57  0.080 / 0.090
G06     149.2          72.2               11.5 +/-    0.75      12.0 +/-    0.75  0.100 / 0.110
G12     310.0          21.0                7.4 +/-    4.06      15.8 +/-    4.06  0.120 / 0.180
G17     39.1           46.6                9.0 +/-    0.25      11.9 +/-    0.25  0.060 / 0.190
G19     356.3          65.7                7.8 +/-    0.72       8.4 +/-    0.72  0.040 / 0.040
G24     294.2          40.2                8.9 +/-    0.98      12.9 +/-    0.98  0.040 / 0.040
G28     104.0          30.2               10.6 +/-    0.85      18.5 +/-    0.85  0.040 / 0.040