PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-19:57:50
G08     318.5          13.5                8.7 +/-    1.34      22.3 +/-    1.34  0.060 / 0.080
G10     308.7          55.3                7.9 +/-    0.88       9.4 +/-    0.88  0.060 / 0.070
G14     212.2          18.1                9.9 +/-    2.48      22.9 +/-    2.48  0.040 / 0.050
G15     45.8           25.2                8.6 +/-    0.83      16.8 +/-    0.83  0.040 / 0.050
G20     9.3            64.5                9.8 +/-    0.64      10.7 +/-    0.64  0.190 / 0.410
G21     115.5          68.2               10.3 +/-    0.67      11.0 +/-    0.67  0.130 / 0.590
G24     86.0           28.0               10.0 +/-    0.83      18.3 +/-    0.83  0.100 / 0.220
G27     294.0          35.8               10.8 +/-    1.26      16.9 +/-    1.26  0.110 / 0.270
G32     213.7          39.5               11.2 +/-    1.73      16.5 +/-    1.73  0.080 / 0.120