PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-13:42:30
G02     205.5          33.1                7.6 +/-    1.37      12.5 +/-    1.37  0.030 / 0.030
G06     151.2          72.5                6.8 +/-    0.66       7.1 +/-    0.66  0.030 / 0.030
G12     309.9          20.4                3.1 +/-    2.30       6.7 +/-    2.30  0.130 / 0.200
G17     39.6           46.0                5.5 +/-    0.43       7.3 +/-    0.43  0.130 / 0.210
G19     355.0          65.7               -5.6 +/-    1.59      -6.0 +/-    1.59  0.120 / 0.110
G24     292.4          40.9                6.5 +/-    8.80       9.3 +/-    8.80  0.100 / 0.100
G28     104.5          30.2                7.0 +/-    1.27      12.2 +/-    1.27  0.050 / 0.060