PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-06:12:40
G01     298.9          37.6                5.0 +/-    2.49       7.6 +/-    2.49  0.050 / 0.050
G10     113.5          35.3                4.9 +/-    0.78       7.7 +/-    0.78  0.060 / 0.040
G11     270.0          29.1                5.3 +/-    1.05       9.5 +/-    1.05  0.050 / 0.030
G14     16.1           61.8                5.8 +/-    1.46       6.5 +/-    1.46  0.050 / 0.030
G18     121.7          10.1                2.4 +/-    2.20       6.5 +/-    2.20  0.060 / 0.080
G22     312.3          33.3                2.7 +/-    1.00       4.5 +/-    1.00  0.070 / 0.080
G25     69.4           17.1                4.4 +/-    2.10      10.3 +/-    2.10  0.080 / 0.020
G31     155.1          73.4                7.1 +/-    1.00       7.3 +/-    1.00  0.100 / 0.020
G32     43.4           47.6                4.0 +/-    1.80       5.2 +/-    1.80  0.050 / 0.060