PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-20:42:50
G01     312.9          28.4                6.9 +/-    1.07      12.6 +/-    1.07  0.040 / 0.030
G10     97.9           44.5                9.8 +/-    0.75      13.4 +/-    0.75  0.040 / 0.040
G11     288.6          27.9                5.5 +/-    1.03      10.1 +/-    1.03  0.080 / 0.130
G14     339.2          69.9                8.8 +/-    0.55       9.3 +/-    0.55  0.090 / 0.100
G20     115.6          19.5                8.8 +/-    1.96      19.6 +/-    1.96  0.080 / 0.170
G22     306.8          19.3                7.1 +/-    1.42      15.9 +/-    1.42  0.070 / 0.210
G25     84.5           13.4                7.9 +/-    2.15      20.4 +/-    2.15  0.110 / 0.170
G31     174.5          54.7               11.2 +/-    0.54      13.3 +/-    0.54  0.110 / 0.210
G32     27.3           58.1                9.1 +/-    0.93      10.6 +/-    0.93  0.040 / 0.040