PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-21:58:10
G08     318.1          13.7                7.8 +/-    2.37      19.9 +/-    2.37  0.030 / 0.040
G10     310.2          55.6                9.1 +/-    1.70      10.8 +/-    1.70  0.030 / 0.030
G14     212.7          18.5               12.2 +/-    2.75      27.8 +/-    2.75  0.110 / 0.370
G15     45.9           25.8                8.4 +/-    3.49      16.2 +/-    3.49  0.330 / 0.430
G20     11.5           64.3               10.2 +/-    0.88      11.1 +/-    0.88  0.090 / 0.090
G21     116.9          68.2               11.4 +/-    0.93      12.1 +/-    0.93  0.060 / 0.070
G24     85.6           28.3                9.8 +/-    1.60      17.7 +/-    1.60  0.080 / 0.110
G27     292.2          36.3                9.7 +/-    2.98      15.0 +/-    2.98  0.080 / 0.120
G32     214.2          41.0               12.0 +/-    1.19      17.1 +/-    1.19  0.100 / 0.410