PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-06:12:40
G01     122.3          15.4                7.8 +/-    1.72      19.2 +/-    1.72  0.040 / 0.060
G07     71.8           67.4                4.9 +/-    0.46       5.3 +/-    0.46  0.040 / 0.060
G08     46.5           34.0                3.4 +/-    0.34       5.5 +/-    0.34  0.030 / 0.050
G09     177.4          30.0                9.6 +/-    2.46      16.8 +/-    2.46  0.020 / 0.040
G11     111.3          37.5                9.0 +/-    0.89      13.7 +/-    0.89  0.040 / 0.080
G13     320.0          14.9                0.6 +/-    2.47       1.6 +/-    2.47  0.060 / 0.080
G17     200.4          22.2                6.1 +/-    1.42      12.8 +/-    1.42  0.040 / 0.130
G28     286.9          56.1                5.6 +/-    1.12       6.6 +/-    1.12  0.040 / 0.090
G30     341.8          65.6                3.3 +/-    0.45       3.5 +/-    0.45  0.060 / 0.100