PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-22:12:30
G08     298.3          21.7                8.3 +/-    1.64      17.4 +/-    1.64  0.060 / 0.070
G10     6.8            62.7                7.2 +/-    1.27       8.0 +/-    1.27  0.040 / 0.070
G14     227.1          41.9               11.1 +/-    1.94      15.6 +/-    1.94  0.110 / 0.080
G20     63.7           52.5                8.0 +/-    1.17       9.8 +/-    1.17  0.060 / 0.110
G21     145.8          43.4               10.3 +/-    1.38      14.1 +/-    1.38  0.110 / 0.210
G24     59.2           27.2                7.6 +/-    2.02      14.1 +/-    2.02  0.110 / 0.200
G27     256.9          33.2               10.8 +/-    2.16      17.7 +/-    2.16  0.060 / 0.090
G32     241.2          66.6                9.2 +/-    0.97       9.9 +/-    0.97  0.070 / 0.120