PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/20-20:58:10
G08     317.9          13.6               10.5 +/-    1.50      27.0 +/-    1.50  0.050 / 0.110
G10     309.1          55.0               12.0 +/-    0.86      14.3 +/-    0.86  0.050 / 0.080
G14     212.7          20.6               15.9 +/-    3.99      34.4 +/-    3.99  0.060 / 0.130
G15     45.5           20.6               12.3 +/-    0.88      26.8 +/-    0.88  0.070 / 0.100
G18     17.7           63.7               12.6 +/-    0.69      13.9 +/-    0.69  0.060 / 0.090
G20     77.2           13.2               13.7 +/-    1.42      35.6 +/-    1.42  0.060 / 0.090
G21     118.8          65.3               15.9 +/-    0.59      17.3 +/-    0.59  0.080 / 0.230
G24     89.8           29.3               16.0 +/-    1.06      28.4 +/-    1.06  0.110 / 0.230
G27     288.9          37.5               11.7 +/-    1.30      17.7 +/-    1.30  0.040 / 0.050
G32     215.3          37.4               16.9 +/-    0.98      25.6 +/-    0.98  0.040 / 0.050