PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-23:43:10
G10     262.7          34.7               15.6 +/-    1.27      25.0 +/-    1.27  0.080 / 0.100
G13     44.7           22.8               11.3 +/-    1.10      23.3 +/-    1.10  0.070 / 0.090
G15     65.4           52.7               15.6 +/-    0.64      19.0 +/-    0.64  0.050 / 0.050
G16     285.2          12.5               13.3 +/-    2.28      35.2 +/-    2.28  0.050 / 0.040
G18     291.1          62.4               14.6 +/-    0.65      16.3 +/-    0.65  0.130 / 0.290
G20     52.3           36.8               11.9 +/-    0.38      18.3 +/-    0.38  0.070 / 0.110
G21     354.9          69.7               14.3 +/-    1.06      15.2 +/-    1.06  0.060 / 0.090
G24     124.7          11.5              -16.0 +/-   24.40     -43.2 +/-   24.40  0.130 / 0.180
G27     319.5          17.2               11.1 +/-    1.14      26.2 +/-    1.14  0.130 / 0.170
G29     166.4          32.6               16.6 +/-    1.29      27.5 +/-    1.29  0.070 / 0.110