PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-08:28:10
G01     39.1           13.5                1.7 +/-    0.67       4.3 +/-    0.67  0.070 / 0.120
G06     172.9          41.3                8.5 +/-    0.94      12.1 +/-    0.94  0.080 / 0.140
G13     234.8          21.6                7.7 +/-    1.68      16.4 +/-    1.68  0.100 / 0.320
G15     267.8          11.7                5.8 +/-    1.99      15.7 +/-    1.99  0.130 / 0.240
G17     4.2            69.7                7.3 +/-    0.62       7.7 +/-    0.62  0.160 / 0.160
G19     286.4          71.6                7.6 +/-    0.44       8.0 +/-    0.44  0.120 / 0.220
G24     316.3          19.1                4.7 +/-    2.07      10.5 +/-    2.07  0.040 / 0.070
G28     65.1           52.1                7.1 +/-    0.83       8.7 +/-    0.83  0.040 / 0.060
G30     156.0          28.8                8.2 +/-    1.32      14.7 +/-    1.32  0.040 / 0.030