PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-02:13:00
G08     308.0          19.1                6.1 +/-    0.84      13.8 +/-    0.84  0.050 / 0.060
G10     344.8          61.6                9.2 +/-    0.79      10.3 +/-    0.79  0.040 / 0.060
G14     220.3          34.7               13.6 +/-    2.44      21.7 +/-    2.44  0.070 / 0.100
G20     45.8           58.5               10.7 +/-    0.72      12.4 +/-    0.72  0.060 / 0.080
G21     138.8          53.1               12.0 +/-    0.79      14.6 +/-    0.79  0.030 / 0.020
G24     69.0           29.6                9.2 +/-    2.04      16.2 +/-    2.04  0.030 / 0.030
G27     269.5          36.7                9.7 +/-    2.83      14.9 +/-    2.83  0.090 / 0.130
G32     227.2          55.6               11.8 +/-    2.46      14.0 +/-    2.46  0.090 / 0.160