PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-23:43:00
G05     52.2           9.9                 6.8 +/-    2.64      19.1 +/-    2.64  0.250 / 0.340
G10     242.1          19.0               11.4 +/-    1.80      25.6 +/-    1.80  0.160 / 0.290
G13     64.8           34.6                9.0 +/-    1.45      14.4 +/-    1.45  0.030 / 0.060
G15     113.7          57.0               10.2 +/-    0.58      11.9 +/-    0.58  0.030 / 0.060
G16     304.9          15.4                6.6 +/-    1.73      16.2 +/-    1.73  0.090 / 0.280
G20     249.7          24.6                7.6 +/-    2.00      15.1 +/-    2.00  0.080 / 0.290
G21     320.7          52.0                9.3 +/-    0.72      11.4 +/-    0.72  0.070 / 0.100
G26     276.8          19.3                9.5 +/-    1.70      21.3 +/-    1.70  0.060 / 0.120
G29     161.5          63.5                9.5 +/-    0.48      10.5 +/-    0.48  0.030 / 0.030