PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-22:58:10
G10     242.8          21.3               12.8 +/-    2.53      27.3 +/-    2.53  0.060 / 0.060
G13     62.7           33.2                7.2 +/-    1.10      11.8 +/-    1.10  0.030 / 0.050
G15     105.5          57.0                9.8 +/-    0.75      11.5 +/-    0.75  0.080 / 0.110
G16     305.6          14.8                4.7 +/-    3.61      11.7 +/-    3.61  0.090 / 0.120
G20     258.2          43.9               11.5 +/-    1.97      15.8 +/-    1.97  0.030 / 0.030
G21     322.9          52.9                8.9 +/-    0.62      10.9 +/-    0.62  0.030 / 0.040
G26     277.8          18.5                8.6 +/-    1.83      19.6 +/-    1.83  0.130 / 0.180
G29     159.3          60.4                9.8 +/-    0.46      11.1 +/-    0.46  0.130 / 0.190