PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-00:42:30
G10     242.0          20.4               12.9 +/-    0.93      28.1 +/-    0.93  0.040 / 0.070
G13     64.0           33.6                9.3 +/-    0.57      15.1 +/-    0.57  0.040 / 0.070
G15     106.8          56.6               12.3 +/-    0.53      14.4 +/-    0.53  0.090 / 0.160
G16     307.4          14.2                7.3 +/-    1.32      18.6 +/-    1.32  0.090 / 0.140
G20     257.1          43.4               10.9 +/-    1.74      15.1 +/-    1.74  0.130 / 0.320
G21     322.1          52.5               11.4 +/-    1.17      14.0 +/-    1.17  0.090 / 0.420
G26     279.4          18.6                9.2 +/-    1.25      20.9 +/-    1.25  0.060 / 0.130
G29     158.3          60.7               11.4 +/-    0.56      12.9 +/-    0.56  0.060 / 0.150