PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-07:58:00
G07     14.0           67.3                4.3 +/-    0.63       4.6 +/-    0.63  0.070 / 0.150
G08     65.0           48.1                3.3 +/-    0.66       4.3 +/-    0.66  0.070 / 0.170
G09     178.9          51.4                7.7 +/-    1.28       9.6 +/-    1.28  0.030 / 0.040
G11     130.8          25.2                5.6 +/-    1.28      10.9 +/-    1.28  0.030 / 0.040
G23     160.4          23.6                7.0 +/-    2.77      14.2 +/-    2.77  0.040 / 0.080
G27     41.2           18.1                3.2 +/-    1.00       7.3 +/-    1.00  0.050 / 0.090
G28     256.5          44.3                4.8 +/-    1.31       6.5 +/-    1.31  0.060 / 0.050
G30     317.5          47.9                2.9 +/-    0.67       3.7 +/-    0.67  0.030 / 0.040