PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-22:42:40
G08     319.5          12.2               11.8 +/-    3.17      31.4 +/-    3.17  0.060 / 0.050
G10     304.4          53.6               13.0 +/-    0.61      15.8 +/-    0.61  0.040 / 0.030
G14     211.6          18.2               20.3 +/-    1.89      46.6 +/-    1.89  0.070 / 0.110
G15     45.6           23.8               11.6 +/-    2.75      23.3 +/-    2.75  0.080 / 0.150
G18     10.1           64.8               13.4 +/-    0.77      14.6 +/-    0.77  0.030 / 0.030
G20     75.3           14.4               11.9 +/-    2.50      30.1 +/-    2.50  0.030 / 0.040
G21     112.4          68.8               15.1 +/-    0.57      16.1 +/-    0.57  0.130 / 0.330
G24     93.2           28.4               15.1 +/-    1.48      27.3 +/-    1.48  0.130 / 0.350
G27     292.5          36.9               15.6 +/-    2.70      24.0 +/-    2.70  0.080 / 0.070
G32     213.8          34.4               16.0 +/-    1.99      25.7 +/-    1.99  0.100 / 0.080