PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-16:27:50
G08     308.9          19.9                5.0 +/-    1.53      11.1 +/-    1.53  0.040 / 0.030
G10     331.1          59.9                5.3 +/-    0.48       6.0 +/-    0.48  0.030 / 0.040
G14     217.3          30.4                6.6 +/-    2.43      11.5 +/-    2.43  0.110 / 0.210
G15     46.7           12.3                5.8 +/-    2.65      15.4 +/-    2.65  0.120 / 0.160
G20     35.9           60.7                5.3 +/-    0.86       6.0 +/-    0.86  0.040 / 0.020
G21     133.4          54.6                7.5 +/-    0.98       9.0 +/-    0.98  0.040 / 0.030
G24     70.7           28.1                4.9 +/-    1.84       8.9 +/-    1.84  0.070 / 0.080
G27     279.4          36.8                7.3 +/-    0.93      11.3 +/-    0.93  0.090 / 0.070
G32     222.1          50.2                7.1 +/-    2.04       9.0 +/-    2.04  0.060 / 0.080