PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-21:42:40
G01     92.6           31.3               14.3 +/-    1.16      24.3 +/-    1.16  0.020 / 0.030
G07     123.5          47.8               15.2 +/-    0.75      19.8 +/-    0.75  0.030 / 0.030
G08     42.4           13.4                8.2 +/-    4.89      21.3 +/-    4.89  0.110 / 0.270
G11     73.3           41.7               13.0 +/-    0.88      18.4 +/-    0.88  0.120 / 0.200
G13     297.3          35.0               13.7 +/-    3.99      21.8 +/-    3.99  0.070 / 0.150
G17     213.9          47.3               15.6 +/-    0.84      20.4 +/-    0.84  0.080 / 0.130
G18     66.5           24.4               13.0 +/-    1.10      25.7 +/-    1.10  0.070 / 0.090
G19     213.8          24.7               17.8 +/-    1.93      35.1 +/-    1.93  0.090 / 0.100
G28     346.1          61.8               12.9 +/-    0.51      14.4 +/-    0.51  0.040 / 0.050
G30     101.5          75.2               15.4 +/-    0.35      15.9 +/-    0.35  0.030 / 0.040