PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-21:13:00
G01     68.2           32.6               13.2 +/-    1.10      21.9 +/-    1.10  0.100 / 0.380
G07     138.7          29.5               11.7 +/-    6.31      20.8 +/-    6.31  0.100 / 0.430
G11     53.1           30.4               12.1 +/-    0.83      21.0 +/-    0.83  0.040 / 0.080
G13     272.0          37.1               10.5 +/-    5.76      16.0 +/-    5.76  0.050 / 0.080
G15     300.6          15.7                7.5 +/-    6.76      18.3 +/-    6.76  0.060 / 0.160
G17     235.4          66.3               10.6 +/-    6.16      11.5 +/-    6.16  0.050 / 0.180
G18     47.7           17.4               10.2 +/-    1.21      23.8 +/-    1.21  0.030 / 0.050
G19     225.9          43.1               12.0 +/-    5.80      16.7 +/-    5.80  0.030 / 0.060
G28     24.2           58.6               12.6 +/-    0.23      14.4 +/-    0.23  0.050 / 0.130
G30     137.6          57.9               10.9 +/-    5.53      12.6 +/-    5.53  0.060 / 0.140