PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-19:43:00
G01     56.6           29.0               10.0 +/-    1.38      17.8 +/-    1.38  0.030 / 0.060
G06     180.4          15.8              -10.5 +/-   44.38     -25.7 +/-   44.38  0.030 / 0.050
G07     142.6          13.7               15.8 +/-    1.86      40.5 +/-    1.86  0.110 / 0.280
G11     46.4           20.8                9.3 +/-    1.28      20.1 +/-    1.28  0.100 / 0.300
G13     258.0          34.8               13.4 +/-    0.83      21.3 +/-    0.83  0.160 / 0.370
G15     290.2          16.6               10.7 +/-    1.71      25.5 +/-    1.71  0.090 / 0.330
G17     271.3          78.3               14.0 +/-    0.63      14.3 +/-    0.63  0.060 / 0.110
G19     235.2          53.9               13.8 +/-    1.87      16.6 +/-    1.87  0.060 / 0.120
G28     32.7           58.1               12.0 +/-    0.62      13.9 +/-    0.62  0.090 / 0.170
G30     145.2          47.0               14.2 +/-    1.12      18.5 +/-    1.12  0.080 / 0.190