PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-14:13:00
G01     60.8           30.6                7.3 +/-    0.84      12.6 +/-    0.84  0.090 / 0.210
G06     180.5          14.2               10.8 +/-    3.26      27.3 +/-    3.26  0.090 / 0.210
G07     141.6          20.3                8.0 +/-    2.63      17.4 +/-    2.63  0.040 / 0.030
G11     47.9           21.9                6.4 +/-    2.00      13.5 +/-    2.00  0.030 / 0.030
G13     266.1          35.1                8.7 +/-    2.66      13.8 +/-    2.66  0.060 / 0.130
G15     297.0          15.7                5.7 +/-    1.07      14.0 +/-    1.07  0.060 / 0.150
G17     263.5          78.3                8.0 +/-    0.48       8.2 +/-    0.48  0.020 / 0.020
G19     232.4          52.1                9.4 +/-    2.06      11.5 +/-    2.06  0.030 / 0.030
G28     34.8           56.7                9.6 +/-    1.00      11.2 +/-    1.00  0.050 / 0.080
G30     142.8          55.2                7.8 +/-    0.72       9.3 +/-    0.72  0.050 / 0.070