PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-21:42:50
G10     275.5          42.2               15.5 +/-    0.83      21.7 +/-    0.83  0.060 / 0.050
G13     39.5           13.7               11.1 +/-    2.23      28.6 +/-    2.23  0.080 / 0.050
G15     52.5           42.6               13.1 +/-    0.72      18.3 +/-    0.72  0.040 / 0.030
G18     319.4          66.4               14.1 +/-    0.62      15.2 +/-    0.62  0.040 / 0.030
G20     60.1           28.9               12.2 +/-    3.07      22.0 +/-    3.07  0.110 / 0.170
G21     34.5           76.1               14.0 +/-    0.98      14.4 +/-    0.98  0.120 / 0.160
G24     114.9          18.5               15.9 +/-    1.28      36.4 +/-    1.28  0.090 / 0.120
G27     313.3          26.0               12.3 +/-    2.01      23.5 +/-    2.01  0.070 / 0.140
G29     166.7          19.0               16.5 +/-    1.95      37.1 +/-    1.95  0.080 / 0.110
G32     206.6          13.7               18.7 +/-    2.23      48.1 +/-    2.23  0.080 / 0.120