PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-02:57:40
G07     57.2           68.5                4.1 +/-    0.59       4.3 +/-    0.59  0.040 / 0.040
G08     49.5           37.6                2.0 +/-    0.45       3.0 +/-    0.45  0.040 / 0.040
G09     176.5          35.0                6.4 +/-    0.98      10.2 +/-    0.98  0.150 / 0.320
G11     116.8          35.4                4.7 +/-    0.47       7.4 +/-    0.47  0.220 / 0.320
G13     321.1          11.5               -9.1 +/-    7.01     -24.5 +/-    7.01  0.080 / 0.220
G17     198.7          16.6                5.0 +/-    1.86      12.0 +/-    1.86  0.130 / 0.280
G18     100.9          16.3                4.6 +/-    1.21      11.0 +/-    1.21  0.120 / 0.450
G23     161.5          10.1                4.7 +/-    2.18      13.0 +/-    2.18  0.040 / 0.060
G28     272.7          50.9                2.8 +/-    1.03       3.5 +/-    1.03  0.040 / 0.050
G30     330.2          58.9                2.1 +/-    0.76       2.4 +/-    0.76  0.060 / 0.110