PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-21:57:40
G08     296.5          22.9               11.9 +/-    0.89      24.3 +/-    0.89  0.080 / 0.090
G10     356.2          62.6               12.7 +/-    0.68      14.1 +/-    0.68  0.080 / 0.130
G14     226.7          43.9               17.8 +/-    0.58      24.4 +/-    0.58  0.030 / 0.030
G18     58.5           53.0               13.3 +/-    0.49      16.2 +/-    0.49  0.030 / 0.030
G21     143.4          41.8               16.3 +/-    1.33      23.0 +/-    1.33  0.050 / 0.080
G24     61.4           28.2               11.5 +/-    0.81      20.8 +/-    0.81  0.060 / 0.090
G27     257.3          33.5               15.0 +/-    1.37      24.6 +/-    1.37  0.030 / 0.040
G32     237.5          61.1               16.5 +/-    0.65      18.6 +/-    0.65  0.030 / 0.030