PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-03:12:50
G01     320.5          12.4               -5.6 +/-   33.58     -14.8 +/-   33.58  0.030 / 0.020
G08     261.8          16.4               10.9 +/-    0.73      26.1 +/-    0.73  0.020 / 0.020
G10     67.1           57.5                9.6 +/-    0.99      11.1 +/-    0.99  0.200 / 0.330
G11     307.2          21.4                9.3 +/-    2.16      19.7 +/-    2.16  0.230 / 0.450
G14     280.7          69.6                9.8 +/-    0.55      10.4 +/-    0.55  0.170 / 0.230
G18     95.0           34.7                7.9 +/-    0.72      12.7 +/-    0.72  0.140 / 0.240
G21     154.7          11.1                6.4 +/-    2.20      17.6 +/-    2.20  0.100 / 0.220
G27     227.5          12.7               10.7 +/-    2.27      28.0 +/-    2.27  0.190 / 0.160
G31     178.2          33.8                9.5 +/-    1.32      15.4 +/-    1.32  0.030 / 0.040
G32     345.3          72.5                9.7 +/-    0.62      10.2 +/-    0.62  0.030 / 0.050