PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-17:57:50
G10     265.4          38.8                9.8 +/-    1.11      14.6 +/-    1.11  0.100 / 0.180
G13     42.4           18.5                9.1 +/-    0.87      20.8 +/-    0.87  0.090 / 0.150
G15     60.1           49.0                8.4 +/-    0.78      10.8 +/-    0.78  0.110 / 0.400
G20     297.3          60.6                8.5 +/-    0.58       9.6 +/-    0.58  0.090 / 0.350
G21     357.9          70.1                9.1 +/-    0.61       9.6 +/-    0.61  0.070 / 0.050
G24     123.9          12.9               10.3 +/-    1.83      26.9 +/-    1.83  0.050 / 0.050
G27     319.7          17.2                6.3 +/-    1.46      14.8 +/-    1.46  0.040 / 0.070
G29     167.1          34.3               10.6 +/-    0.60      17.0 +/-    0.60  0.050 / 0.090