PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-19:13:10
G07     119.3          45.7               15.3 +/-    0.70      20.4 +/-    0.70  0.090 / 0.160
G08     41.6           13.4                7.2 +/-    1.73      18.5 +/-    1.73  0.080 / 0.180
G11     76.7           42.1               13.6 +/-    0.52      19.2 +/-    0.52  0.030 / 0.030
G13     302.4          33.7               15.8 +/-    0.93      25.7 +/-    0.93  0.030 / 0.030
G17     208.5          46.1               17.2 +/-    2.41      22.8 +/-    2.41  0.050 / 0.170
G18     69.8           24.0               11.0 +/-    0.37      22.0 +/-    0.37  0.060 / 0.140
G19     210.8          20.2               14.4 +/-    1.66      31.4 +/-    1.66  0.180 / 0.280
G28     323.7          60.8               13.3 +/-    0.81      15.0 +/-    0.81  0.110 / 0.200
G30     75.5           78.8               12.8 +/-    0.70      13.1 +/-    0.70  0.070 / 0.060