PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-01:58:00
G01     318.5          19.3                7.2 +/-    2.26      16.1 +/-    2.26  0.200 / 0.340
G08     253.9          12.3               10.9 +/-    1.23      28.8 +/-    1.23  0.160 / 0.280
G10     82.5           52.0                8.2 +/-    0.96      10.1 +/-    0.96  0.140 / 0.220
G11     300.5          24.6                7.6 +/-    1.09      15.0 +/-    1.09  0.220 / 0.230
G14     300.6          70.7                7.5 +/-    0.60       7.9 +/-    0.60  0.040 / 0.040
G18     302.7          41.9                8.7 +/-    1.29      12.3 +/-    1.29  0.040 / 0.050
G20     76.4           65.9               14.8 +/-    1.32      16.0 +/-    1.32  0.080 / 0.150
G22     301.3          10.3                3.6 +/-    8.87      10.0 +/-    8.87  0.070 / 0.130
G31     173.4          45.7                9.2 +/-    0.96      12.3 +/-    0.96  0.200 / 0.340
G32     14.7           65.0                6.2 +/-    0.46       6.8 +/-    0.46  0.210 / 0.280