PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-23:12:50
G08     306.4          20.6               12.5 +/-    1.46      27.1 +/-    1.46  0.020 / 0.020
G10     334.4          60.3               10.4 +/-    0.36      11.7 +/-    0.36  0.030 / 0.030
G14     219.4          34.4               15.7 +/-    1.86      25.3 +/-    1.86  0.050 / 0.050
G18     42.2           58.4               13.3 +/-    0.58      15.3 +/-    0.58  0.080 / 0.050
G21     136.0          53.2               14.8 +/-    0.80      18.0 +/-    0.80  0.050 / 0.050
G24     73.0           30.5               13.2 +/-    1.01      22.9 +/-    1.01  0.050 / 0.050
G27     270.0          37.2               14.6 +/-    2.46      22.3 +/-    2.46  0.060 / 0.060
G32     225.5          51.1               13.7 +/-    2.18      17.0 +/-    2.18  0.070 / 0.090