PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-17:58:10
G08     272.7          21.2                9.4 +/-    2.07      20.2 +/-    2.07  0.160 / 0.250
G10     47.3           60.5                7.7 +/-    0.43       8.8 +/-    0.43  0.120 / 0.260
G14     252.0          61.9                8.4 +/-    0.46       9.4 +/-    0.46  0.030 / 0.030
G18     314.8          28.2                5.7 +/-    1.73      10.4 +/-    1.73  0.030 / 0.030
G20     87.6           41.5                6.7 +/-    0.77       9.5 +/-    0.77  0.050 / 0.050
G21     152.5          19.8                6.5 +/-    1.71      14.4 +/-    1.71  0.060 / 0.050
G24     41.0           11.8                6.8 +/-    2.63      18.4 +/-    2.63  0.160 / 0.120
G27     240.2          21.6                8.6 +/-    1.61      18.1 +/-    1.61  0.270 / 0.320
G31     182.2          19.8                8.9 +/-    0.98      19.7 +/-    0.98  0.190 / 0.270
G32     303.4          76.0                7.6 +/-    0.49       7.8 +/-    0.49  0.170 / 0.300