PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-20:42:50
G10     268.8          39.5               11.5 +/-    1.07      16.9 +/-    1.07  0.050 / 0.030
G13     41.1           16.8                7.5 +/-    1.83      17.9 +/-    1.83  0.070 / 0.040
G15     61.2           52.1               10.1 +/-    1.07      12.4 +/-    1.07  0.130 / 0.200
G16     277.0          11.7               12.7 +/-    2.40      34.1 +/-    2.40  0.130 / 0.190
G20     300.7          61.0               10.2 +/-    0.73      11.5 +/-    0.73  0.140 / 0.270
G21     7.6            72.8               10.6 +/-    0.89      11.0 +/-    0.89  0.150 / 0.220
G24     116.5          15.4               11.9 +/-    2.16      29.4 +/-    2.16  0.100 / 0.070
G27     318.4          19.1                9.8 +/-    2.02      22.0 +/-    2.02  0.070 / 0.060
G29     168.1          29.9               11.7 +/-    1.12      20.5 +/-    1.12  0.110 / 0.220
G32     204.3          11.4               -0.1 +/-   43.86      -0.4 +/-   43.86  0.130 / 0.300