PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-22:28:10
G05     51.5           11.0                7.6 +/-    2.86      20.7 +/-    2.86  0.040 / 0.050
G10     241.0          19.5               13.4 +/-    3.97      29.8 +/-    3.97  0.050 / 0.060
G13     65.5           33.9                9.1 +/-    1.05      14.7 +/-    1.05  0.070 / 0.100
G15     110.7          56.3               11.6 +/-    0.37      13.7 +/-    0.37  0.080 / 0.090
G16     307.8          14.4                6.1 +/-    3.93      15.5 +/-    3.93  0.040 / 0.040
G20     255.6          42.3               11.9 +/-    2.41      16.7 +/-    2.41  0.030 / 0.040
G21     320.3          51.2               10.5 +/-    0.67      13.0 +/-    0.67  0.070 / 0.450
G26     280.2          19.0                8.4 +/-    0.83      19.0 +/-    0.83  0.100 / 0.370
G29     158.1          63.4               10.3 +/-    0.28      11.4 +/-    0.28  0.090 / 0.190