PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-20:12:40
G05     53.1           9.8                 7.7 +/-    2.69      21.7 +/-    2.69  0.030 / 0.050
G10     244.5          21.5               11.0 +/-    1.61      23.3 +/-    1.61  0.040 / 0.050
G13     61.0           33.3                8.8 +/-    1.27      14.4 +/-    1.27  0.120 / 0.460
G15     112.9          58.6                9.9 +/-    0.43      11.4 +/-    0.43  0.120 / 0.470
G16     302.5          15.5                5.8 +/-    1.24      14.3 +/-    1.24  0.110 / 0.350
G20     260.3          45.7                9.8 +/-    2.35      13.0 +/-    2.35  0.200 / 0.340
G21     325.2          54.9                9.8 +/-    0.31      11.7 +/-    0.31  0.070 / 0.100
G26     274.9          18.2                8.6 +/-    1.43      19.7 +/-    1.43  0.080 / 0.120
G29     162.3          59.2               10.9 +/-    0.37      12.4 +/-    0.37  0.030 / 0.040