PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-16:13:00
G08     292.0          23.9                6.8 +/-    1.39      13.6 +/-    1.39  0.040 / 0.090
G10     7.5            62.9                7.5 +/-    0.47       8.3 +/-    0.47  0.050 / 0.110
G14     229.1          46.6               10.4 +/-    0.97      13.6 +/-    0.97  0.040 / 0.030
G18     317.4          12.4                6.3 +/-    1.29      16.7 +/-    1.29  0.040 / 0.030
G20     64.6           52.5                9.3 +/-    1.02      11.3 +/-    1.02  0.100 / 0.140
G21     145.6          37.0               10.6 +/-    1.47      16.2 +/-    1.47  0.110 / 0.110
G24     53.6           23.1                8.1 +/-    0.58      16.5 +/-    0.58  0.060 / 0.080
G27     258.4          32.1                8.4 +/-    0.62      14.1 +/-    0.62  0.070 / 0.060
G32     243.3          65.8                8.8 +/-    0.66       9.5 +/-    0.66  0.060 / 0.080