PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-20:58:00
G08     296.9          23.3                9.5 +/-    2.07      19.4 +/-    2.07  0.060 / 0.120
G10     357.1          62.6                9.1 +/-    0.65      10.1 +/-    0.65  0.090 / 0.120
G14     225.5          41.7               13.6 +/-    0.98      19.3 +/-    0.98  0.040 / 0.090
G20     57.8           54.9                8.8 +/-    0.38      10.5 +/-    0.38  0.040 / 0.080
G21     143.6          44.6               11.3 +/-    1.84      15.3 +/-    1.84  0.080 / 0.110
G24     58.2           25.5                9.4 +/-    0.93      18.2 +/-    0.93  0.070 / 0.110
G27     262.0          34.0                9.5 +/-    1.46      15.4 +/-    1.46  0.060 / 0.120
G32     237.0          64.0               13.7 +/-    0.60      15.1 +/-    0.60  0.060 / 0.120