PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-21:12:50
G01     122.5          15.4               12.0 +/-    3.35      29.5 +/-    3.35  0.040 / 0.050
G07     68.5           68.5               12.5 +/-    0.36      13.3 +/-    0.36  0.040 / 0.050
G08     48.6           38.9                9.3 +/-    0.97      13.8 +/-    0.97  0.030 / 0.040
G09     178.2          30.9               12.8 +/-    1.14      22.0 +/-    1.14  0.020 / 0.030
G11     114.8          37.9               13.2 +/-    0.92      19.9 +/-    0.92  0.090 / 0.170
G13     319.6          15.7                9.5 +/-    2.42      23.1 +/-    2.42  0.110 / 0.230
G17     202.0          17.3               15.1 +/-    2.10      35.5 +/-    2.10  0.030 / 0.040
G18     99.0           19.2               11.1 +/-    1.36      24.9 +/-    1.36  0.030 / 0.030
G28     286.4          56.0               10.7 +/-    2.59      12.6 +/-    2.59  0.110 / 0.050
G30     345.6          67.2               11.7 +/-    0.97      12.6 +/-    0.97  0.050 / 0.060