PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-23:28:00
G10     243.9          20.8               11.3 +/-    1.88      24.4 +/-    1.88  0.030 / 0.060
G13     62.0           33.7                9.2 +/-    1.16      15.0 +/-    1.16  0.050 / 0.050
G15     109.1          57.9               10.6 +/-    0.37      12.3 +/-    0.37  0.110 / 0.370
G16     302.4          15.8                7.9 +/-    2.18      19.2 +/-    2.18  0.100 / 0.340
G20     250.8          23.8                7.7 +/-    2.79      15.5 +/-    2.79  0.060 / 0.110
G21     323.2          53.7                9.9 +/-    0.52      12.0 +/-    0.52  0.050 / 0.110
G26     274.4          18.7                9.3 +/-    1.86      21.2 +/-    1.86  0.030 / 0.040
G29     162.6          60.7               10.6 +/-    0.40      11.9 +/-    0.40  0.040 / 0.040