PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-13:42:50
G01     57.9           29.7                7.4 +/-    2.13      13.1 +/-    2.13  0.030 / 0.040
G07     143.2          20.2                7.2 +/-    2.17      15.7 +/-    2.17  0.040 / 0.030
G11     46.8           20.9                6.5 +/-    3.26      14.0 +/-    3.26  0.090 / 0.140
G13     259.6          34.6                8.6 +/-    1.47      13.8 +/-    1.47  0.150 / 0.180
G15     295.2          15.0                3.4 +/-    1.13       8.5 +/-    1.13  0.100 / 0.110
G17     273.8          78.8                8.7 +/-    0.60       8.8 +/-    0.60  0.090 / 0.120
G18     40.7           11.0                6.3 +/-    1.70      17.3 +/-    1.70  0.100 / 0.090
G19     234.0          48.9                8.2 +/-    1.36      10.5 +/-    1.36  0.090 / 0.080
G28     38.9           56.1                6.9 +/-    0.78       8.1 +/-    0.78  0.190 / 0.360
G30     145.6          51.8                8.8 +/-    1.04      10.8 +/-    1.04  0.110 / 0.380