PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-19:27:30
G02     29.7           58.1                9.5 +/-    0.53      11.0 +/-    0.53  0.030 / 0.050
G05     141.5          61.2               12.0 +/-    0.67      13.5 +/-    0.67  0.040 / 0.040
G06     53.8           14.8                8.2 +/-    3.09      20.4 +/-    3.09  0.030 / 0.050
G12     191.2          66.1               10.7 +/-    1.41      11.6 +/-    1.41  0.030 / 0.040
G19     98.1           13.1               11.1 +/-    2.11      29.0 +/-    2.11  0.040 / 0.070
G25     297.8          53.5                9.6 +/-    0.79      11.7 +/-    0.79  0.040 / 0.070
G29     305.9          26.0                9.7 +/-    2.66      18.6 +/-    2.66  0.040 / 0.060