PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-01:28:10
G10     291.1          49.6                9.6 +/-    0.74      12.1 +/-    0.74  0.070 / 0.110
G15     47.6           34.6                6.8 +/-    0.66      10.8 +/-    0.66  0.060 / 0.100
G20     302.4          54.9                7.2 +/-    0.82       8.6 +/-    0.82  0.040 / 0.050
G21     76.5           76.9                7.8 +/-    0.61       8.0 +/-    0.61  0.040 / 0.050
G24     100.8          24.6                8.5 +/-    0.88      16.8 +/-    0.88  0.060 / 0.160
G27     305.1          32.0                9.2 +/-    0.81      15.5 +/-    0.81  0.060 / 0.160
G29     168.8          12.5               10.0 +/-    1.73      26.5 +/-    1.73  0.070 / 0.040
G32     208.5          29.4               12.9 +/-    1.32      22.8 +/-    1.32  0.050 / 0.040