PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/20-19:42:30
G08     299.0          22.3               12.2 +/-    1.61      25.3 +/-    1.61  0.080 / 0.080
G10     352.4          62.4               10.2 +/-    0.48      11.4 +/-    0.48  0.090 / 0.080
G14     225.2          41.6               13.2 +/-    2.27      18.7 +/-    2.27  0.040 / 0.070
G18     56.8           53.4               11.3 +/-    0.71      13.7 +/-    0.71  0.040 / 0.060
G21     142.1          42.0               12.6 +/-    0.99      17.8 +/-    0.99  0.050 / 0.110
G24     63.2           28.7               11.8 +/-    1.03      21.3 +/-    1.03  0.080 / 0.090
G27     259.5          34.3               13.7 +/-    1.04      22.0 +/-    1.04  0.090 / 0.090
G32     235.3          60.7               11.7 +/-    1.74      13.2 +/-    1.74  0.110 / 0.130