PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-16:57:30
G02     61.8           30.8                9.1 +/-    0.65      15.6 +/-    0.65  0.030 / 0.030
G05     57.5           62.1                8.0 +/-    0.96       9.0 +/-    0.96  0.040 / 0.030
G12     185.4          30.8               11.7 +/-    1.11      20.1 +/-    1.11  0.060 / 0.110
G13     128.0          16.6               14.6 +/-    1.75      35.0 +/-    1.75  0.080 / 0.120
G15     162.1          14.0               14.3 +/-    1.72      36.5 +/-    1.72  0.050 / 0.050
G20     209.4          62.2               10.9 +/-    0.53      12.2 +/-    0.53  0.030 / 0.050
G21     273.8          20.8                7.5 +/-    2.60      16.3 +/-    2.60  0.090 / 0.260
G25     230.4          49.6               13.0 +/-    1.21      16.5 +/-    1.21  0.090 / 0.310
G29     335.2          61.9                9.8 +/-    0.50      10.9 +/-    0.50  0.070 / 0.240