PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/19-14:57:50
G10     246.4          25.2                7.8 +/-    1.73      15.1 +/-    1.73  0.190 / 0.580
G13     57.6           31.1                7.0 +/-    2.12      12.0 +/-    2.12  0.180 / 0.490
G15     91.6           56.8                9.4 +/-    0.74      11.0 +/-    0.74  0.030 / 0.040
G16     299.8          16.0                5.1 +/-    1.92      12.3 +/-    1.92  0.040 / 0.050
G20     265.9          50.1                9.5 +/-    2.79      11.9 +/-    2.79  0.040 / 0.040
G21     329.1          56.8                7.0 +/-    0.55       8.2 +/-    0.55  0.030 / 0.050
G26     273.2          17.1                7.1 +/-    4.88      16.7 +/-    4.88  0.090 / 0.150
G29     162.1          57.0                9.8 +/-    0.40      11.4 +/-    0.40  0.100 / 0.200