PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-16:12:30
G10     251.0          27.5                8.7 +/-    1.12      16.0 +/-    1.12  0.030 / 0.040
G13     52.9           29.3                8.3 +/-    1.83      14.7 +/-    1.83  0.030 / 0.040
G15     89.2           58.6                9.2 +/-    0.80      10.6 +/-    0.80  0.090 / 0.370
G16     296.0          15.2                5.1 +/-    2.82      12.6 +/-    2.82  0.100 / 0.430
G20     270.6          51.2               10.0 +/-    3.04      12.4 +/-    3.04  0.040 / 0.030
G21     337.8          61.9                7.8 +/-    0.55       8.7 +/-    0.55  0.040 / 0.030
G26     269.1          15.2                6.8 +/-    1.79      16.9 +/-    1.79  0.110 / 0.100
G29     164.0          48.7               10.5 +/-    0.35      13.5 +/-    0.35  0.110 / 0.100