PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-00:57:30
G08     306.8          20.5               10.1 +/-    1.50      22.0 +/-    1.50  0.030 / 0.060
G10     333.1          60.1                9.8 +/-    0.43      11.1 +/-    0.43  0.030 / 0.060
G14     219.1          34.0               12.8 +/-    0.77      20.7 +/-    0.77  0.060 / 0.090
G15     47.0           10.6                8.4 +/-    1.04      23.1 +/-    1.04  0.050 / 0.080
G18     40.1           59.1               10.5 +/-    0.68      12.0 +/-    0.68  0.040 / 0.050
G21     135.4          54.8               12.7 +/-    0.71      15.2 +/-    0.71  0.040 / 0.050
G24     73.7           30.5               11.7 +/-    0.39      20.2 +/-    0.39  0.030 / 0.030
G27     270.8          37.3               12.0 +/-    1.27      18.3 +/-    1.27  0.030 / 0.040
G32     224.9          51.7               14.1 +/-    0.81      17.5 +/-    0.81  0.070 / 0.090