PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-22:42:40
G10     257.9          32.5               10.8 +/-    2.09      17.9 +/-    2.09  0.270 / 0.240
G13     46.9           24.6                8.6 +/-    2.38      16.9 +/-    2.38  0.420 / 0.450
G15     75.9           57.3                9.5 +/-    0.87      11.1 +/-    0.87  0.040 / 0.040
G16     285.9          14.9                6.7 +/-    2.51      16.6 +/-    2.51  0.040 / 0.040
G20     260.6          24.7                4.8 +/-    2.27       9.5 +/-    2.27  0.160 / 0.330
G21     343.0          65.2                9.4 +/-    0.66      10.2 +/-    0.66  0.120 / 0.310
G26     258.8          12.1               12.2 +/-    1.65      32.5 +/-    1.65  0.110 / 0.190
G27     321.9          11.4               -8.7 +/-   28.43     -23.4 +/-   28.43  0.120 / 0.140
G29     167.1          42.1               10.6 +/-    0.70      14.9 +/-    0.70  0.040 / 0.040