PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-22:27:40
G10     261.6          34.1                8.2 +/-    1.32      13.3 +/-    1.32  0.170 / 0.070
G13     45.4           23.8                9.1 +/-    2.44      18.2 +/-    2.44  0.120 / 0.080
G15     66.1           52.8               10.7 +/-    0.44      13.1 +/-    0.44  0.270 / 0.310
G16     286.9          12.6                9.0 +/-    1.06      23.6 +/-    1.06  0.260 / 0.410
G18     289.9          62.3                7.6 +/-    0.98       8.5 +/-    0.98  0.160 / 0.240
G20     51.4           38.1                9.3 +/-    1.02      14.0 +/-    1.02  0.150 / 0.240
G21     354.2          69.3               11.6 +/-    0.77      12.3 +/-    0.77  0.040 / 0.030
G24     125.6          10.9               -5.0 +/-   39.83     -13.8 +/-   39.83  0.050 / 0.030
G27     319.9          16.3                9.4 +/-    3.25      22.5 +/-    3.25  0.070 / 0.210
G29     165.9          32.9               11.6 +/-    0.91      19.2 +/-    0.91  0.120 / 0.220