PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-19:12:40
G05     47.1           22.9                6.1 +/-    1.29      12.6 +/-    1.29  0.060 / 0.080
G13     80.6           36.2               10.1 +/-    1.23      15.7 +/-    1.23  0.060 / 0.070
G15     137.7          48.3                9.5 +/-    0.91      12.2 +/-    0.91  0.270 / 0.630
G16     316.9          11.3                2.8 +/-   10.16       7.7 +/-   10.16  0.360 / 0.590
G20     244.6          33.8                7.0 +/-    1.32      11.4 +/-    1.32  0.060 / 0.140
G21     309.7          44.5                7.5 +/-    0.87      10.2 +/-    0.87  0.110 / 0.330
G25     199.5          12.9               11.5 +/-    1.81      30.0 +/-    1.81  0.270 / 0.470
G26     291.3          20.5                7.7 +/-    1.42      16.6 +/-    1.42  0.140 / 0.550
G29     151.1          77.5                7.1 +/-    0.31       7.2 +/-    0.31  0.080 / 0.100