PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-14:12:50
G08     320.0          11.4               -1.5 +/-   18.13      -4.0 +/-   18.13  0.050 / 0.070
G10     308.8          55.0                2.0 +/-    0.69       2.4 +/-    0.69  0.060 / 0.060
G14     212.9          18.2                4.0 +/-    2.14       9.2 +/-    2.14  0.030 / 0.040
G15     45.4           19.8                2.8 +/-    0.78       6.3 +/-    0.78  0.030 / 0.040
G20     75.5           17.0                3.6 +/-    1.06       8.4 +/-    1.06  0.090 / 0.300
G21     118.5          65.1                4.7 +/-    0.77       5.1 +/-    0.77  0.140 / 0.310
G24     89.7           29.1                5.4 +/-    0.84       9.7 +/-    0.84  0.030 / 0.040
G27     289.9          37.3                3.3 +/-    1.22       5.1 +/-    1.22  0.030 / 0.040
G32     214.6          40.1                5.2 +/-    1.10       7.6 +/-    1.10  0.060 / 0.090