PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-02:58:10
G08     269.6          19.8                7.6 +/-    2.39      16.7 +/-    2.39  0.110 / 0.320
G10     51.3           60.7                6.6 +/-    0.63       7.4 +/-    0.63  0.130 / 0.230
G11     312.8          16.3                4.1 +/-    2.44       9.9 +/-    2.44  0.120 / 0.210
G14     260.3          65.2                7.5 +/-    0.72       8.2 +/-    0.72  0.160 / 0.430
G18     86.9           39.9                6.7 +/-    1.28       9.8 +/-    1.28  0.030 / 0.020
G21     153.3          19.0                6.6 +/-    1.74      14.8 +/-    1.74  0.020 / 0.020
G24     42.2           14.5                5.6 +/-    2.31      14.0 +/-    2.31  0.040 / 0.050
G27     233.6          18.3                9.5 +/-    3.15      21.7 +/-    3.15  0.040 / 0.060
G31     179.7          25.3                8.4 +/-    1.90      16.3 +/-    1.90  0.130 / 0.260
G32     315.1          75.3                7.3 +/-    0.93       7.5 +/-    0.93  0.070 / 0.170