PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-06:42:50
G08     305.8          20.6                0.5 +/-    2.32       1.1 +/-    2.32  0.070 / 0.070
G10     344.0          61.5               -1.0 +/-    0.53      -1.1 +/-    0.53  0.110 / 0.090
G14     220.3          35.7                5.6 +/-    2.06       8.8 +/-    2.06  0.040 / 0.050
G20     46.5           58.2                1.2 +/-    0.46       1.4 +/-    0.46  0.050 / 0.050
G21     138.6          51.6                3.1 +/-    1.17       3.8 +/-    1.17  0.040 / 0.030
G24     67.9           29.0                2.1 +/-    1.67       3.8 +/-    1.67  0.030 / 0.020
G27     270.4          36.5                1.6 +/-    1.20       2.5 +/-    1.20  0.150 / 0.070
G32     227.0          52.8                3.5 +/-    3.02       4.3 +/-    3.02  0.120 / 0.120