PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-00:28:10
G10     263.2          35.9                3.6 +/-    9.96       5.6 +/-    9.96  0.130 / 0.320
G13     43.7           20.9                7.9 +/-    1.02      16.9 +/-    1.02  0.140 / 0.400
G15     66.0           53.7               -2.0 +/-   10.63      -2.4 +/-   10.63  0.210 / 0.310
G16     280.9          13.5                5.0 +/-   11.24      12.9 +/-   11.24  0.220 / 0.340
G20     271.6          40.2                1.0 +/-   10.71       1.4 +/-   10.71  0.100 / 0.090
G21     352.3          69.0               -3.7 +/-   10.59      -3.9 +/-   10.59  0.090 / 0.110
G24     122.1          12.2                5.0 +/-    9.06      13.2 +/-    9.06  0.100 / 0.370
G27     320.2          15.9                1.5 +/-   10.74       3.5 +/-   10.74  0.080 / 0.380
G29     167.9          36.1                2.5 +/-    9.00       3.9 +/-    9.00  0.060 / 0.050