PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/26-19:12:50
G10     262.3          34.6               17.0 +/-    1.49      27.2 +/-    1.49  0.120 / 0.140
G13     44.9           22.9               12.3 +/-    0.86      25.2 +/-    0.86  0.100 / 0.150
G15     63.8           51.2               14.8 +/-    0.62      18.4 +/-    0.62  0.050 / 0.090
G16     288.6          12.1               14.7 +/-    1.98      39.3 +/-    1.98  0.050 / 0.090
G18     293.2          63.4               13.4 +/-    0.53      14.8 +/-    0.53  0.130 / 0.360
G20     51.0           38.9               13.0 +/-    0.48      19.3 +/-    0.48  0.040 / 0.050
G21     0.8            70.6               14.5 +/-    0.98      15.2 +/-    0.98  0.040 / 0.060
G24     125.1          11.3              -16.7 +/-   25.89     -45.2 +/-   25.89  0.220 / 0.460
G27     319.7          16.7               10.4 +/-    1.46      24.8 +/-    1.46  0.190 / 0.520
G29     164.8          30.0               19.1 +/-    0.70      33.5 +/-    0.70  0.070 / 0.250