PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-20:58:10
G01     120.1          17.2               15.8 +/-    2.60      37.2 +/-    2.60  0.040 / 0.050
G07     76.6           67.4               12.4 +/-    0.58      13.3 +/-    0.58  0.050 / 0.040
G08     47.0           36.7               10.7 +/-    0.84      16.5 +/-    0.84  0.150 / 0.220
G09     177.8          27.9               17.4 +/-    1.21      31.9 +/-    1.21  0.160 / 0.220
G11     111.1          39.4               15.1 +/-    1.04      22.2 +/-    1.04  0.030 / 0.030
G13     318.4          18.1               11.2 +/-    3.17      25.9 +/-    3.17  0.030 / 0.030
G17     202.6          19.9               18.3 +/-    2.44      40.3 +/-    2.44  0.030 / 0.030
G18     96.1           20.4               12.7 +/-    1.47      27.7 +/-    1.47  0.030 / 0.030
G28     291.5          57.2               11.7 +/-    1.31      13.7 +/-    1.31  0.090 / 0.210
G30     350.4          69.4               10.8 +/-    0.67      11.4 +/-    0.67  0.120 / 0.180