PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-17:42:40
G10     260.3          35.6               11.3 +/-    1.22      17.7 +/-    1.22  0.120 / 0.280
G13     45.1           22.1                7.7 +/-    2.16      16.0 +/-    2.16  0.110 / 0.260
G15     66.3           52.3                8.3 +/-    1.16      10.2 +/-    1.16  0.110 / 0.290
G16     284.8          14.6                6.7 +/-    3.95      16.9 +/-    3.95  0.110 / 0.300
G20     288.3          58.4                8.8 +/-    1.63      10.1 +/-    1.63  0.050 / 0.050
G21     348.7          66.8                9.8 +/-    0.52      10.6 +/-    0.52  0.050 / 0.050
G24     127.8          10.0               -9.8 +/-   38.59     -27.4 +/-   38.59  0.160 / 0.340
G26     258.9          11.1                7.2 +/-    3.84      19.7 +/-    3.84  0.140 / 0.240
G27     321.3          13.2                7.9 +/-    3.21      20.5 +/-    3.21  0.230 / 0.550
G29     166.3          39.6                8.9 +/-    0.90      13.0 +/-    0.90  0.380 / 0.510