PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-23:13:00
G08     306.4          20.6               13.4 +/-    2.30      29.0 +/-    2.30  0.040 / 0.080
G10     334.4          60.3               11.6 +/-    0.51      13.2 +/-    0.51  0.050 / 0.090
G14     219.4          34.4               16.7 +/-    0.94      26.9 +/-    0.94  0.030 / 0.070
G18     42.2           58.4               12.6 +/-    0.34      14.5 +/-    0.34  0.040 / 0.060
G21     136.0          53.2               15.3 +/-    0.47      18.6 +/-    0.47  0.040 / 0.060
G24     73.0           30.5               14.2 +/-    0.70      24.7 +/-    0.70  0.030 / 0.050
G27     270.0          37.2               15.1 +/-    0.98      23.1 +/-    0.98  0.060 / 0.080
G32     225.5          51.1               16.5 +/-    0.95      20.5 +/-    0.95  0.060 / 0.080