PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-20:58:00
G10     251.5          26.6               18.4 +/-    1.92      34.7 +/-    1.92  0.040 / 0.050
G13     53.7           30.8               13.9 +/-    1.03      24.0 +/-    1.03  0.040 / 0.050
G15     84.4           57.2               14.3 +/-    0.70      16.7 +/-    0.70  0.150 / 0.330
G16     298.3          13.9               12.7 +/-    1.39      32.5 +/-    1.39  0.130 / 0.320
G18     271.1          56.9               16.8 +/-    0.98      19.7 +/-    0.98  0.090 / 0.330
G20     43.6           47.5               13.7 +/-    0.93      17.8 +/-    0.93  0.090 / 0.330
G21     337.2          62.2               15.4 +/-    0.63      17.2 +/-    0.63  0.070 / 0.150
G26     270.7          14.8               16.2 +/-    1.99      40.5 +/-    1.99  0.060 / 0.150
G29     163.1          44.2               17.1 +/-    0.99      23.4 +/-    0.99  0.050 / 0.070