PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-12:58:00
G01     67.8           32.3                8.8 +/-    1.60      14.7 +/-    1.60  0.060 / 0.120
G07     138.6          26.4                8.8 +/-    1.05      16.6 +/-    1.05  0.060 / 0.100
G11     51.4           26.9                6.4 +/-    2.15      11.9 +/-    2.15  0.060 / 0.110
G13     274.1          36.5                9.4 +/-    1.19      14.5 +/-    1.19  0.060 / 0.120
G15     302.2          15.1                2.1 +/-    1.86       5.3 +/-    1.86  0.030 / 0.030
G17     240.8          73.8                8.3 +/-    0.60       8.6 +/-    0.60  0.030 / 0.030
G19     226.3          46.2                8.3 +/-    2.32      11.0 +/-    2.32  0.030 / 0.030
G28     24.3           58.5                9.8 +/-    2.01      11.3 +/-    2.01  0.030 / 0.030
G30     137.1          61.2                8.1 +/-    0.27       9.1 +/-    0.27  0.070 / 0.240