PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-19:13:10
G10     285.0          47.4                9.6 +/-    0.62      12.5 +/-    0.62  0.080 / 0.120
G15     49.6           39.6                8.6 +/-    0.85      12.6 +/-    0.85  0.070 / 0.130
G20     330.4          64.9                8.7 +/-    1.47       9.5 +/-    1.47  0.040 / 0.050
G21     62.9           76.7                9.7 +/-    0.91       9.9 +/-    0.91  0.040 / 0.050
G24     103.4          22.5               13.3 +/-    1.52      27.5 +/-    1.52  0.090 / 0.190
G27     310.3          28.3                9.4 +/-    1.40      17.1 +/-    1.40  0.090 / 0.200
G29     168.4          16.0               13.0 +/-    3.28      31.5 +/-    3.28  0.040 / 0.060
G32     207.2          23.6               12.7 +/-    1.86      25.7 +/-    1.86  0.040 / 0.060