PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-20:58:00
G05     49.6           15.5                7.9 +/-    0.96      19.4 +/-    0.96  0.120 / 0.220
G10     237.8          14.5               17.1 +/-    2.14      43.1 +/-    2.14  0.130 / 0.290
G13     72.1           35.9               11.1 +/-    1.00      17.4 +/-    1.00  0.040 / 0.070
G15     127.1          53.5               13.0 +/-    0.58      15.7 +/-    0.58  0.050 / 0.070
G16     310.2          14.4                8.7 +/-    1.66      22.1 +/-    1.66  0.110 / 0.330
G20     241.3          1.7                 6.7 +/-    2.12      21.0 +/-    2.12  0.110 / 0.350
G21     314.6          47.8                9.4 +/-    1.13      12.2 +/-    1.13  0.070 / 0.130
G26     283.0          20.6               11.0 +/-    2.34      23.8 +/-    2.34  0.050 / 0.140
G29     158.2          70.9               12.3 +/-    1.51      13.0 +/-    1.51  0.040 / 0.060