PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-22:58:00
G10     270.6          40.4                8.2 +/-    2.07      11.9 +/-    2.07  0.160 / 0.260
G13     40.4           15.6                6.6 +/-    2.41      16.2 +/-    2.41  0.200 / 0.170
G15     58.3           49.7                6.5 +/-    0.54       8.2 +/-    0.54  0.040 / 0.030
G16     274.2          11.2                8.4 +/-    2.90      23.0 +/-    2.90  0.040 / 0.030
G20     270.6          31.2                4.6 +/-    0.89       7.9 +/-    0.89  0.110 / 0.300
G21     7.7            73.4                8.4 +/-    0.80       8.8 +/-    0.80  0.110 / 0.240
G24     115.9          16.2                9.8 +/-    1.90      23.6 +/-    1.90  0.130 / 0.220
G27     317.2          21.1                6.9 +/-    3.81      14.7 +/-    3.81  0.130 / 0.200
G29     168.7          28.9               10.0 +/-    1.47      17.8 +/-    1.47  0.230 / 0.410
G32     204.3          13.7               10.9 +/-    3.47      28.0 +/-    3.47  0.230 / 0.380