PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-21:58:00
G01     82.0           33.1               10.3 +/-    0.68      17.0 +/-    0.68  0.130 / 0.320
G07     131.3          39.9               13.5 +/-    1.19      19.6 +/-    1.19  0.190 / 0.200
G11     63.1           37.9               10.6 +/-    1.51      16.0 +/-    1.51  0.110 / 0.210
G13     286.8          37.3               12.5 +/-    0.93      19.0 +/-    0.93  0.110 / 0.260
G15     310.0          13.0               10.1 +/-    2.17      26.3 +/-    2.17  0.030 / 0.030
G17     220.9          56.0               14.2 +/-    1.41      16.8 +/-    1.41  0.030 / 0.020
G18     57.5           22.4                9.1 +/-    2.71      19.0 +/-    2.71  0.070 / 0.100
G19     218.2          32.9               13.1 +/-    1.62      21.7 +/-    1.62  0.060 / 0.090
G28     3.5            60.9               12.3 +/-    0.64      13.9 +/-    0.64  0.040 / 0.080
G30     123.1          68.1               14.6 +/-    0.51      15.6 +/-    0.51  0.030 / 0.070