PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-02:12:40
G02     64.4           28.4                9.6 +/-    1.99      17.4 +/-    1.99  0.090 / 0.130
G05     51.3           54.9               11.1 +/-    0.51      13.2 +/-    0.51  0.130 / 0.110
G12     183.3          26.4               13.3 +/-    1.32      25.2 +/-    1.32  0.030 / 0.040
G13     123.9          18.9               14.2 +/-    1.89      32.1 +/-    1.89  0.030 / 0.030
G15     160.9          16.4               14.9 +/-    1.55      35.8 +/-    1.55  0.150 / 0.260
G20     220.9          17.5               16.5 +/-    1.91      38.6 +/-    1.91  0.130 / 0.370
G21     275.5          20.2               13.6 +/-    1.26      29.8 +/-    1.26  0.070 / 0.080
G25     230.4          47.9               14.2 +/-    3.25      18.4 +/-    3.25  0.090 / 0.070
G29     331.2          59.1               12.3 +/-    0.75      14.1 +/-    0.75  0.080 / 0.200