PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-13:27:30
G02     201.9          15.0                6.3 +/-    2.64      15.8 +/-    2.64  0.130 / 0.140
G06     169.7          53.4               10.2 +/-    0.68      12.3 +/-    0.68  0.130 / 0.160
G13     227.9          14.0                4.9 +/-    2.31      12.5 +/-    2.31  0.220 / 0.500
G17     22.1           59.9                7.4 +/-    0.60       8.5 +/-    0.60  0.170 / 0.920
G19     303.2          69.6                6.4 +/-    0.47       6.8 +/-    0.47  0.090 / 0.110
G24     309.6          30.6                6.1 +/-    1.16      10.5 +/-    1.16  0.110 / 0.110
G28     85.8           41.2                7.8 +/-    0.94      11.1 +/-    0.94  0.040 / 0.040
G30     157.5          17.2                8.5 +/-    1.54      20.1 +/-    1.54  0.050 / 0.040