PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-21:58:10
G10     261.5          34.0               14.6 +/-    1.77      23.6 +/-    1.77  0.130 / 0.090
G13     45.5           23.8               12.5 +/-    2.33      25.1 +/-    2.33  0.120 / 0.090
G15     66.1           52.7               12.8 +/-    0.35      15.7 +/-    0.35  0.240 / 0.380
G16     287.4          12.6               13.9 +/-    1.48      36.6 +/-    1.48  0.120 / 0.200
G18     289.9          62.3               12.5 +/-    1.11      13.9 +/-    1.11  0.250 / 0.220
G20     51.2           38.4               13.4 +/-    0.98      20.1 +/-    0.98  0.060 / 0.090
G21     354.4          69.3               14.8 +/-    0.74      15.8 +/-    0.74  0.060 / 0.070
G24     125.7          10.8               -8.4 +/-   40.03     -23.1 +/-   40.03  0.050 / 0.070
G27     319.9          16.2               13.3 +/-    2.15      32.1 +/-    2.15  0.050 / 0.080
G29     165.7          32.8               16.9 +/-    0.68      28.0 +/-    0.68  0.040 / 0.040