PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-09:28:10
G02     205.8          39.8                8.6 +/-    0.99      12.6 +/-    0.99  0.070 / 0.060
G06     147.7          75.0                7.7 +/-    0.85       8.0 +/-    0.85  0.060 / 0.050
G12     310.8          20.6                3.7 +/-    2.95       8.0 +/-    2.95  0.110 / 0.160
G17     43.6           42.5                3.9 +/-    2.50       5.4 +/-    2.50  0.190 / 0.220
G19     7.2            63.0                5.0 +/-    0.45       5.5 +/-    0.45  0.020 / 0.020
G24     285.9          43.1               -0.2 +/-    1.77      -0.3 +/-    1.77  0.030 / 0.020
G28     107.5          28.5                7.9 +/-    0.96      14.3 +/-    0.96  0.040 / 0.030