PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-20:58:00
G02     199.5          16.6               20.8 +/-   10.96      49.8 +/-   10.96  0.050 / 0.060
G06     174.2          46.8               21.6 +/-    9.96      28.4 +/-    9.96  0.050 / 0.070
G13     229.6          16.4               17.9 +/-   11.33      43.0 +/-   11.33  0.080 / 0.160
G17     16.6           63.3                9.9 +/-    1.83      10.9 +/-    1.83  0.090 / 0.160
G19     307.6          71.7                9.8 +/-    1.58      10.2 +/-    1.58  0.080 / 0.160
G24     312.2          26.9                8.5 +/-    1.00      15.9 +/-    1.00  0.080 / 0.130
G28     78.7           45.9               10.0 +/-    2.09      13.3 +/-    2.09  0.110 / 0.370
G30     155.8          17.0               15.7 +/-    1.73      37.1 +/-    1.73  0.090 / 0.290