PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-03:27:50
G08     282.8          23.1                8.8 +/-    1.28      18.0 +/-    1.28  0.030 / 0.020
G10     23.5           63.2                7.2 +/-    1.93       7.9 +/-    1.93  0.020 / 0.020
G14     239.4          55.5               11.4 +/-    2.85      13.5 +/-    2.85  0.060 / 0.090
G18     72.3           47.9                8.8 +/-    1.16      11.4 +/-    1.16  0.050 / 0.130
G21     149.6          32.0                9.8 +/-    1.45      16.5 +/-    1.45  0.140 / 0.110
G24     50.3           22.6                7.8 +/-    2.61      16.0 +/-    2.61  0.310 / 0.170
G27     244.4          26.6               10.4 +/-    3.84      19.5 +/-    3.84  0.030 / 0.020
G31     182.1          13.4               13.1 +/-    1.99      33.8 +/-    1.99  0.040 / 0.020
G32     265.9          72.4               10.2 +/-    0.59      10.6 +/-    0.59  0.070 / 0.120