PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-22:12:30
G02     35.3           53.6                9.2 +/-    0.69      11.1 +/-    0.69  0.030 / 0.040
G05     131.4          64.8               10.9 +/-    0.90      11.9 +/-    0.90  0.040 / 0.040
G06     56.0           12.2                6.9 +/-    0.86      18.5 +/-    0.86  0.050 / 0.050
G12     191.3          62.5                9.2 +/-    1.63      10.3 +/-    1.63  0.040 / 0.050
G25     291.8          55.3                8.8 +/-    0.86      10.4 +/-    0.86  0.040 / 0.050
G29     309.0          29.3                8.7 +/-    1.42      15.4 +/-    1.42  0.040 / 0.050