PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-13:13:00
G01     60.2           30.4                9.0 +/-    1.01      15.7 +/-    1.01  0.110 / 0.160
G06     180.7          14.4               10.6 +/-    2.55      26.7 +/-    2.55  0.100 / 0.130
G07     141.9          20.1                8.9 +/-    1.93      19.6 +/-    1.93  0.090 / 0.140
G11     47.7           21.7                8.5 +/-    2.41      17.9 +/-    2.41  0.140 / 0.190
G13     265.5          34.9               10.6 +/-    2.38      16.9 +/-    2.38  0.030 / 0.040
G15     295.8          16.0                6.4 +/-    2.00      15.5 +/-    2.00  0.030 / 0.030
G17     266.3          78.6                9.3 +/-    0.48       9.4 +/-    0.48  0.020 / 0.030
G19     233.1          52.6                9.9 +/-    1.52      12.1 +/-    1.52  0.030 / 0.030
G28     36.0           56.5               10.7 +/-    1.05      12.6 +/-    1.05  0.120 / 0.210
G30     143.2          54.2                9.7 +/-    0.70      11.7 +/-    0.70  0.170 / 0.270