PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-22:42:50
G02     63.1           31.4                8.9 +/-    1.28      15.1 +/-    1.28  0.090 / 0.150
G05     52.8           58.7                7.5 +/-    0.50       8.6 +/-    0.50  0.090 / 0.170
G12     183.0          24.6               10.4 +/-    2.90      20.6 +/-    2.90  0.040 / 0.080
G13     124.5          19.6               11.1 +/-    1.61      24.6 +/-    1.61  0.050 / 0.070
G15     162.3          15.8               14.7 +/-    3.13      35.9 +/-    3.13  0.030 / 0.040
G20     210.8          69.0               10.1 +/-    0.82      10.7 +/-    0.82  0.020 / 0.040
G21     276.1          21.2                8.7 +/-    1.28      18.5 +/-    1.28  0.030 / 0.050
G25     221.5          45.1               11.7 +/-    1.32      15.7 +/-    1.32  0.040 / 0.040
G29     334.0          62.6                8.7 +/-    0.53       9.7 +/-    0.53  0.070 / 0.260