PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-19:57:40
G02     264.2          78.1               10.3 +/-    0.45      10.5 +/-    0.45  0.030 / 0.030
G05     170.9          21.9               14.4 +/-    5.94      30.3 +/-    5.94  0.030 / 0.030
G06     40.4           49.1                8.9 +/-    0.75      11.4 +/-    0.75  0.100 / 0.210
G12     320.2          62.8                8.4 +/-    0.91       9.3 +/-    0.91  0.110 / 0.150
G17     79.8           14.7               10.0 +/-    1.81      25.1 +/-    1.81  0.080 / 0.110
G19     67.6           31.3                9.6 +/-    2.12      16.4 +/-    2.12  0.090 / 0.120
G24     238.3          29.9               11.5 +/-    1.88      20.1 +/-    1.88  0.030 / 0.040
G25     317.7          24.5               10.1 +/-    0.88      20.0 +/-    0.88  0.030 / 0.040