PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-21:13:00
G10     261.7          35.1               12.1 +/-    1.45      19.2 +/-    1.45  0.100 / 0.230
G13     44.5           21.9                9.3 +/-    1.31      19.5 +/-    1.31  0.110 / 0.270
G15     72.1           57.2               11.1 +/-    0.44      12.9 +/-    0.44  0.110 / 0.350
G16     283.2          13.8               10.9 +/-    1.22      27.9 +/-    1.22  0.110 / 0.400
G20     288.1          57.8               12.7 +/-    1.28      14.7 +/-    1.28  0.090 / 0.120
G21     351.7          68.4               11.4 +/-    1.14      12.1 +/-    1.14  0.080 / 0.090
G24     122.3          11.5               12.8 +/-    1.81      34.7 +/-    1.81  0.060 / 0.050
G26     256.7          10.2               11.0 +/-    1.86      30.6 +/-    1.86  0.060 / 0.050
G27     321.0          13.9               10.2 +/-    3.48      26.1 +/-    3.48  0.090 / 0.280
G29     167.4          37.3               12.4 +/-    0.95      18.9 +/-    0.95  0.070 / 0.250