PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-17:43:00
G08     270.6          20.5                6.1 +/-    3.42      13.2 +/-    3.42  0.110 / 0.320
G10     51.3           59.9                7.2 +/-    0.49       8.2 +/-    0.49  0.090 / 0.260
G14     255.7          63.4                7.8 +/-    0.57       8.6 +/-    0.57  0.200 / 0.290
G18     314.0          30.1                8.9 +/-    1.53      15.5 +/-    1.53  0.250 / 0.350
G20     89.8           40.2                8.6 +/-    0.73      12.5 +/-    0.73  0.070 / 0.070
G21     152.9          17.6                8.6 +/-    2.78      20.0 +/-    2.78  0.060 / 0.070
G24     40.2           10.5                7.9 +/-    1.75      22.0 +/-    1.75  0.030 / 0.030
G27     238.6          20.3                8.4 +/-    1.15      18.4 +/-    1.15  0.030 / 0.030
G31     182.0          21.5                9.0 +/-    2.40      19.1 +/-    2.40  0.090 / 0.140
G32     311.8          75.9                8.7 +/-    0.59       8.9 +/-    0.59  0.090 / 0.140