PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-19:57:40
G07     38.5           69.8               14.2 +/-    0.79      15.1 +/-    0.79  0.050 / 0.080
G08     57.0           46.6               12.8 +/-    0.56      16.9 +/-    0.56  0.230 / 0.110
G09     179.4          41.2               15.0 +/-    0.88      21.4 +/-    0.88  0.240 / 0.370
G11     124.7          32.4               16.1 +/-    0.51      26.8 +/-    0.51  0.340 / 0.470
G18     108.1          14.5               15.8 +/-    1.58      39.7 +/-    1.58  0.160 / 0.060
G27     37.7           10.0               10.0 +/-    3.10      27.9 +/-    3.10  0.090 / 0.080
G28     270.7          51.0               15.6 +/-    3.36      19.4 +/-    3.36  0.050 / 0.030
G30     331.2          58.9               12.6 +/-    0.69      14.5 +/-    0.69  0.050 / 0.030