PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-17:58:00
G01     313.2          28.1               11.3 +/-    2.15      20.6 +/-    2.15  0.100 / 0.170
G10     97.3           44.7                9.8 +/-    0.36      13.3 +/-    0.36  0.080 / 0.190
G11     289.1          27.8                8.3 +/-    0.99      15.3 +/-    0.99  0.070 / 0.170
G14     338.9          70.1                9.5 +/-    0.41      10.1 +/-    0.41  0.090 / 0.190
G18     285.3          50.2               10.7 +/-    0.71      13.5 +/-    0.71  0.040 / 0.050
G20     115.3          19.8                9.8 +/-    0.86      21.7 +/-    0.86  0.040 / 0.040
G22     306.8          19.6                9.2 +/-    2.28      20.4 +/-    2.28  0.040 / 0.050
G25     84.9           13.1                9.5 +/-    1.42      24.7 +/-    1.42  0.030 / 0.050
G31     177.5          52.0               11.9 +/-    1.05      14.7 +/-    1.05  0.130 / 0.200
G32     24.8           59.4                8.9 +/-    0.39      10.2 +/-    0.39  0.100 / 0.220