PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-23:12:40
G05     52.1           9.7                 6.8 +/-    1.40      19.1 +/-    1.40  0.040 / 0.060
G10     242.0          20.5               10.9 +/-    3.71      23.7 +/-    3.71  0.050 / 0.070
G13     63.9           33.5                8.6 +/-    1.07      14.1 +/-    1.07  0.070 / 0.120
G15     107.5          56.7               11.2 +/-    0.46      13.2 +/-    0.46  0.080 / 0.130
G16     306.7          14.5                4.5 +/-    2.32      11.3 +/-    2.32  0.030 / 0.040
G20     257.0          43.2               11.0 +/-    1.18      15.2 +/-    1.18  0.030 / 0.040
G21     321.8          52.3                8.8 +/-    0.54      10.8 +/-    0.54  0.120 / 0.220
G26     279.0          18.7                8.0 +/-    1.55      18.3 +/-    1.55  0.130 / 0.210
G29     158.7          61.5               10.1 +/-    0.36      11.3 +/-    0.36  0.130 / 0.210