PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-12:57:30
G01     120.4          16.7                6.4 +/-    1.41      15.3 +/-    1.41  0.190 / 0.290
G07     80.7           64.8                4.6 +/-    0.46       5.0 +/-    0.46  0.130 / 0.340
G08     45.3           31.2                2.6 +/-    0.77       4.5 +/-    0.77  0.030 / 0.030
G11     106.1          37.7                6.1 +/-    0.61       9.2 +/-    0.61  0.040 / 0.030
G13     319.4          16.1                3.2 +/-    3.46       7.8 +/-    3.46  0.040 / 0.030
G17     200.5          25.0                4.6 +/-    3.07       8.9 +/-    3.07  0.040 / 0.030
G28     289.8          56.5                4.8 +/-    1.35       5.7 +/-    1.35  0.170 / 0.160
G30     340.1          65.1                5.0 +/-    0.82       5.4 +/-    0.82  0.160 / 0.170