PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-11:13:00
G02     201.8          30.7                6.5 +/-    1.12      11.2 +/-    1.12  0.040 / 0.120
G06     170.0          62.3                8.8 +/-    0.72       9.8 +/-    0.72  0.100 / 0.110
G12     305.1          11.1               -2.4 +/-   15.31      -6.6 +/-   15.31  0.060 / 0.100
G17     34.1           50.8                3.8 +/-    0.79       4.7 +/-    0.79  0.080 / 0.090
G19     356.2          67.0                4.5 +/-    0.56       4.8 +/-    0.56  0.030 / 0.040
G24     303.8          34.6                4.3 +/-    1.28       6.9 +/-    1.28  0.040 / 0.040
G28     98.8           33.4                5.3 +/-    0.46       8.6 +/-    0.46  0.140 / 0.470