PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-22:58:00
G10     264.7          36.9               10.8 +/-    1.20      16.6 +/-    1.20  0.250 / 0.220
G13     42.9           19.8                7.8 +/-    1.75      17.3 +/-    1.75  0.170 / 0.260
G15     64.9           53.5                8.6 +/-    1.02      10.4 +/-    1.02  0.040 / 0.040
G16     279.4          13.1                9.3 +/-    1.94      24.3 +/-    1.94  0.040 / 0.040
G20     266.4          29.1                5.1 +/-    0.69       9.0 +/-    0.69  0.130 / 0.320
G21     354.7          69.8                8.9 +/-    0.82       9.4 +/-    0.82  0.170 / 0.290
G24     120.6          13.1               10.2 +/-    2.78      26.6 +/-    2.78  0.130 / 0.390
G27     319.7          16.8                8.8 +/-    2.18      21.0 +/-    2.18  0.190 / 0.420
G29     168.1          34.8               10.8 +/-    1.48      17.2 +/-    1.48  0.200 / 0.300