PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-20:57:40
G02     26.1           61.0               10.3 +/-    0.85      11.5 +/-    0.85  0.040 / 0.050
G05     150.4          57.9               13.3 +/-    0.52      15.4 +/-    0.52  0.040 / 0.050
G06     52.6           17.7                8.9 +/-    2.23      20.6 +/-    2.23  0.030 / 0.030
G12     200.6          69.9               11.7 +/-    0.34      12.3 +/-    0.34  0.030 / 0.030
G19     98.8           9.8                12.2 +/-    3.08      34.1 +/-    3.08  0.040 / 0.040
G20     197.4          24.7               15.3 +/-    4.48      30.2 +/-    4.48  0.040 / 0.050
G25     296.1          55.9               10.3 +/-    1.87      12.1 +/-    1.87  0.050 / 0.130
G29     306.1          27.3               10.1 +/-    1.33      18.8 +/-    1.33  0.100 / 0.110