PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-16:12:50
G01     51.2           25.9                9.1 +/-    0.82      17.4 +/-    0.82  0.030 / 0.030
G06     177.9          24.0                9.8 +/-    1.46      19.6 +/-    1.46  0.040 / 0.040
G07     145.3          10.7                9.5 +/-    2.17      26.2 +/-    2.17  0.060 / 0.060
G11     44.3           13.5                7.3 +/-    1.43      18.9 +/-    1.43  0.050 / 0.070
G13     254.2          31.1               10.5 +/-    1.78      18.0 +/-    1.78  0.090 / 0.120
G15     288.5          15.3                7.7 +/-    2.48      19.0 +/-    2.48  0.070 / 0.120
G17     321.2          79.2                9.4 +/-    0.55       9.6 +/-    0.55  0.190 / 0.250
G19     245.9          61.0               10.7 +/-    0.75      12.1 +/-    0.75  0.150 / 0.350
G28     50.5           53.3                8.3 +/-    0.73      10.1 +/-    0.73  0.080 / 0.180
G30     149.1          45.3                9.1 +/-    1.50      12.2 +/-    1.50  0.070 / 0.180