PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-15:58:10
G08     317.5          14.4                3.5 +/-    3.25       9.0 +/-    3.25  0.030 / 0.030
G10     310.9          55.9                5.1 +/-    1.70       6.0 +/-    1.70  0.040 / 0.030
G14     212.4          19.9                6.8 +/-    2.64      15.0 +/-    2.64  0.070 / 0.070
G15     45.7           21.9                5.0 +/-    2.77      10.5 +/-    2.77  0.100 / 0.040
G20     12.3           64.2                5.7 +/-    0.75       6.3 +/-    0.75  0.090 / 0.110
G21     119.2          64.7                7.2 +/-    0.59       7.9 +/-    0.59  0.070 / 0.110
G24     83.7           27.9                5.8 +/-    1.88      10.6 +/-    1.88  0.200 / 0.390
G27     293.6          35.6                7.5 +/-    3.01      11.8 +/-    3.01  0.360 / 0.440
G32     214.5          39.1                6.9 +/-    1.73      10.2 +/-    1.73  0.060 / 0.080