PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-03:57:40
G08     268.8          19.5               10.2 +/-    2.15      22.7 +/-    2.15  0.020 / 0.020
G10     52.9           60.4                5.8 +/-    0.83       6.6 +/-    0.83  0.030 / 0.020
G11     312.2          17.1                6.8 +/-    2.06      16.2 +/-    2.06  0.080 / 0.150
G14     262.1          65.7                8.5 +/-    1.08       9.2 +/-    1.08  0.090 / 0.230
G18     87.5           39.8                7.8 +/-    1.30      11.4 +/-    1.30  0.150 / 0.340
G21     153.6          18.5                8.2 +/-    2.23      18.7 +/-    2.23  0.120 / 0.230
G24     41.8           13.9                6.8 +/-    3.17      17.5 +/-    3.17  0.020 / 0.030
G27     233.0          17.7               11.7 +/-    1.61      27.3 +/-    1.61  0.020 / 0.030
G31     179.2          26.6               10.8 +/-    1.54      20.3 +/-    1.54  0.040 / 0.050
G32     320.6          75.3                7.9 +/-    0.66       8.1 +/-    0.66  0.050 / 0.050