PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-17:28:00
G08     291.4          23.9                8.6 +/-    1.17      17.3 +/-    1.17  0.050 / 0.100
G10     8.7            62.9                8.0 +/-    0.73       8.8 +/-    0.73  0.050 / 0.120
G14     229.6          47.0               11.1 +/-    0.98      14.6 +/-    0.98  0.050 / 0.040
G18     317.5          12.5                8.6 +/-    1.75      22.7 +/-    1.75  0.060 / 0.040
G20     65.4           52.2                8.7 +/-    0.72      10.6 +/-    0.72  0.120 / 0.130
G21     146.0          37.4               10.1 +/-    0.66      15.4 +/-    0.66  0.110 / 0.100
G24     52.7           22.5                7.1 +/-    0.62      14.8 +/-    0.62  0.050 / 0.080
G27     257.3          31.8               10.2 +/-    1.74      17.2 +/-    1.74  0.060 / 0.070
G32     244.9          66.9                9.5 +/-    1.17      10.3 +/-    1.17  0.060 / 0.090