PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-22:58:10
G10     252.4          27.3               16.1 +/-    1.73      29.9 +/-    1.73  0.090 / 0.230
G13     52.8           30.2               12.7 +/-    1.10      22.1 +/-    1.10  0.090 / 0.320
G15     84.1           57.5               15.1 +/-    0.41      17.5 +/-    0.41  0.100 / 0.400
G16     296.1          14.2               10.6 +/-    1.60      26.9 +/-    1.60  0.080 / 0.320
G18     271.9          56.8               13.8 +/-    0.49      16.2 +/-    0.49  0.040 / 0.050
G20     44.8           45.9               11.2 +/-    0.63      14.9 +/-    0.63  0.030 / 0.050
G21     337.0          62.2               13.2 +/-    0.39      14.8 +/-    0.39  0.030 / 0.070
G26     268.5          14.6               13.6 +/-    1.17      34.3 +/-    1.17  0.050 / 0.060
G29     164.1          44.3               17.7 +/-    0.67      24.1 +/-    0.67  0.060 / 0.090