PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-13:12:30
G02     205.0          39.9                7.7 +/-    0.89      11.2 +/-    0.89  0.070 / 0.070
G06     155.0          73.6                5.8 +/-    0.62       6.1 +/-    0.62  0.070 / 0.090
G12     310.5          18.9                5.2 +/-    1.28      11.7 +/-    1.28  0.090 / 0.180
G17     43.2           43.2                4.0 +/-    0.28       5.6 +/-    0.28  0.090 / 0.190
G19     16.1           60.7                4.3 +/-    0.34       4.9 +/-    0.34  0.140 / 0.150
G24     293.5          39.4                3.8 +/-    0.86       5.6 +/-    0.86  0.110 / 0.190
G28     108.2          26.9                7.1 +/-    2.23      13.2 +/-    2.23  0.030 / 0.030