PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-18:27:30
G10     290.3          48.9               11.0 +/-    1.22      14.0 +/-    1.22  0.060 / 0.110
G15     46.8           31.2                9.6 +/-    0.68      16.5 +/-    0.68  0.060 / 0.090
G18     351.4          66.7                9.6 +/-    0.37      10.4 +/-    0.37  0.060 / 0.160
G20     67.6           22.4                9.0 +/-    1.08      18.7 +/-    1.08  0.060 / 0.120
G21     90.7           72.9               12.8 +/-    0.57      13.3 +/-    0.57  0.060 / 0.180
G24     103.6          24.6               11.0 +/-    0.75      21.7 +/-    0.75  0.060 / 0.230
G27     303.7          33.0               10.8 +/-    2.98      17.8 +/-    2.98  0.040 / 0.050
G32     209.5          26.0               11.4 +/-    1.28      21.8 +/-    1.28  0.030 / 0.050