PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-14:43:10
G01     59.6           30.1                7.6 +/-    1.21      13.3 +/-    1.21  0.040 / 0.050
G06     180.2          15.3                9.0 +/-    1.59      22.1 +/-    1.59  0.040 / 0.050
G07     142.1          19.1                7.2 +/-    1.12      16.1 +/-    1.12  0.090 / 0.140
G11     47.4           20.9                5.8 +/-    1.04      12.4 +/-    1.04  0.060 / 0.220
G13     264.6          34.8               10.4 +/-    0.74      16.6 +/-    0.74  0.080 / 0.120
G15     296.2          15.7                7.8 +/-    2.81      19.2 +/-    2.81  0.070 / 0.120
G17     268.9          78.8                8.7 +/-    0.71       8.9 +/-    0.71  0.020 / 0.030
G19     233.6          53.2               10.5 +/-    0.90      12.8 +/-    0.90  0.030 / 0.030
G28     36.6           56.4                7.3 +/-    0.63       8.6 +/-    0.63  0.050 / 0.110
G30     143.6          54.2                8.8 +/-    0.95      10.6 +/-    0.95  0.060 / 0.100