PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-23:12:30
G10     280.8          45.5               10.2 +/-    0.95      13.6 +/-    0.95  0.050 / 0.060
G15     51.4           42.6                5.6 +/-    0.66       7.8 +/-    0.66  0.060 / 0.070
G20     278.5          36.1                3.9 +/-    0.93       6.1 +/-    0.93  0.040 / 0.040
G21     38.7           77.2                8.7 +/-    0.62       8.9 +/-    0.62  0.040 / 0.040
G24     108.1          20.9               10.1 +/-    0.86      21.8 +/-    0.86  0.060 / 0.130
G27     311.9          27.2                8.0 +/-    2.69      14.9 +/-    2.69  0.070 / 0.110
G29     169.0          20.2               12.3 +/-    1.21      27.0 +/-    1.21  0.100 / 0.150
G32     206.1          21.8                9.7 +/-    1.79      20.5 +/-    1.79  0.090 / 0.180