PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/23-01:28:10
G01     41.8           17.6                4.9 +/-    3.58      11.5 +/-    3.58  0.270 / 0.340
G06     179.0          32.7                7.3 +/-    1.17      12.1 +/-    1.17  0.230 / 0.200
G13     238.5          23.6               10.1 +/-    2.10      20.4 +/-    2.10  0.370 / 0.170
G15     272.3          12.8                5.8 +/-    1.67      15.2 +/-    1.67  0.260 / 0.160
G17     3.7            70.7                6.6 +/-    0.39       7.0 +/-    0.39  0.040 / 0.060
G19     270.0          67.6                7.2 +/-    0.58       7.7 +/-    0.58  0.060 / 0.040
G24     316.2          19.9                4.0 +/-    3.06       8.9 +/-    3.06  0.040 / 0.030
G28     65.5           50.2                5.9 +/-    1.16       7.5 +/-    1.16  0.050 / 0.030
G30     154.1          29.6                7.2 +/-    0.89      12.6 +/-    0.89  0.100 / 0.090