PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-00:12:30
G10     252.0          29.3               11.1 +/-    1.72      19.8 +/-    1.72  0.080 / 0.130
G13     51.6           27.9                7.0 +/-    2.24      12.8 +/-    2.24  0.070 / 0.110
G15     82.0           56.8                9.8 +/-    0.55      11.5 +/-    0.55  0.040 / 0.040
G16     295.1          15.3                6.5 +/-    2.50      15.9 +/-    2.50  0.040 / 0.050
G20     272.1          51.5               10.7 +/-    2.79      13.2 +/-    2.79  0.100 / 0.170
G21     335.7          60.8                9.4 +/-    0.99      10.6 +/-    0.99  0.120 / 0.180
G26     267.2          14.8                8.5 +/-    2.46      21.1 +/-    2.46  0.030 / 0.040
G29     163.4          47.3               10.3 +/-    0.53      13.4 +/-    0.53  0.040 / 0.040