PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-17:42:30
G02     25.2           61.2               11.1 +/-    0.53      12.5 +/-    0.53  0.030 / 0.040
G05     147.0          58.2               13.3 +/-    0.85      15.3 +/-    0.85  0.030 / 0.040
G06     52.3           16.7                8.3 +/-    2.33      19.8 +/-    2.33  0.040 / 0.060
G12     191.6          68.7               11.2 +/-    0.42      11.9 +/-    0.42  0.060 / 0.050
G19     95.3           15.4               10.6 +/-    1.66      26.0 +/-    1.66  0.030 / 0.030
G25     301.5          51.8               10.1 +/-    2.29      12.5 +/-    2.29  0.030 / 0.030
G29     303.7          23.7               10.1 +/-    1.43      20.3 +/-    1.43  0.140 / 0.140