PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-04:27:40
G08     285.5          23.4                5.8 +/-    0.80      11.8 +/-    0.80  0.030 / 0.020
G10     17.8           63.3                6.1 +/-    0.77       6.7 +/-    0.77  0.030 / 0.020
G14     236.4          53.4                7.1 +/-    1.88       8.6 +/-    1.88  0.040 / 0.030
G18     68.7           49.7              -27.6 +/-   55.47     -34.9 +/-   55.47  0.040 / 0.030
G21     148.7          34.8                5.7 +/-    0.80       9.1 +/-    0.80  0.070 / 0.090
G24     52.2           23.9                5.3 +/-    2.04      10.7 +/-    2.04  0.050 / 0.100
G27     246.8          28.1                5.1 +/-    0.93       9.3 +/-    0.93  0.100 / 0.150
G31     182.3          11.6               -1.1 +/-   11.10      -3.1 +/-   11.10  0.100 / 0.110
G32     259.6          71.4                6.4 +/-    0.48       6.8 +/-    0.48  0.110 / 0.070