PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-22:57:50
G08     298.6          22.8                6.4 +/-    1.42      13.2 +/-    1.42  0.060 / 0.060
G10     354.1          62.4                7.4 +/-    0.46       8.3 +/-    0.46  0.060 / 0.060
G14     224.6          39.9               10.2 +/-    1.22      14.9 +/-    1.22  0.100 / 0.110
G20     55.7           55.6                8.2 +/-    0.80       9.7 +/-    0.80  0.110 / 0.120
G21     142.9          46.7                9.0 +/-    0.62      11.9 +/-    0.62  0.060 / 0.110
G24     60.0           26.4                6.4 +/-    1.59      12.2 +/-    1.59  0.070 / 0.090
G27     262.9          34.5               10.2 +/-    1.36      16.4 +/-    1.36  0.120 / 0.090
G32     235.4          63.5                9.5 +/-    1.36      10.4 +/-    1.36  0.100 / 0.090