PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-02:28:00
G08     280.2          22.7               10.7 +/-    1.20      22.1 +/-    1.20  0.030 / 0.030
G10     29.1           62.9               10.2 +/-    0.64      11.3 +/-    0.64  0.030 / 0.030
G14     242.6          57.5               12.8 +/-    0.77      14.9 +/-    0.77  0.040 / 0.090
G18     75.6           46.1               11.2 +/-    0.56      14.9 +/-    0.56  0.040 / 0.070
G21     150.5          29.1               11.8 +/-    1.55      21.0 +/-    1.55  0.060 / 0.160
G24     48.4           21.2                8.6 +/-    1.06      18.5 +/-    1.06  0.060 / 0.170
G27     242.1          25.1               11.7 +/-    1.46      22.8 +/-    1.46  0.080 / 0.170
G31     181.9          15.2               15.4 +/-    1.87      38.1 +/-    1.87  0.070 / 0.150
G32     272.7          73.3               11.0 +/-    0.41      11.5 +/-    0.41  0.080 / 0.180