PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-22:28:00
G05     51.9           10.8                5.9 +/-    9.75      16.3 +/-    9.75  0.420 / 0.540
G10     241.6          18.6               13.2 +/-    2.55      30.2 +/-    2.55  0.210 / 0.360
G13     65.4           34.7                8.4 +/-    1.70      13.4 +/-    1.70  0.040 / 0.050
G15     116.2          56.7               11.6 +/-    0.66      13.5 +/-    0.66  0.040 / 0.050
G16     305.3          15.5                7.3 +/-    1.60      18.0 +/-    1.60  0.210 / 0.150
G20     246.8          14.9               13.9 +/-    1.38      34.7 +/-    1.38  0.170 / 0.160
G21     320.0          51.5                9.1 +/-    1.13      11.3 +/-    1.13  0.110 / 0.160
G26     277.4          19.5               11.3 +/-    2.24      25.2 +/-    2.24  0.100 / 0.140
G29     161.2          64.4               10.3 +/-    0.31      11.3 +/-    0.31  0.040 / 0.050