PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-12:43:00
G02     204.5          34.6                5.5 +/-    1.31       8.8 +/-    1.31  0.050 / 0.130
G06     152.2          71.6                6.5 +/-    0.48       6.8 +/-    0.48  0.050 / 0.130
G12     308.2          17.4                3.6 +/-    2.16       8.3 +/-    2.16  0.070 / 0.090
G17     35.6           49.5                4.4 +/-    0.43       5.5 +/-    0.43  0.060 / 0.090
G19     9.2            63.1                4.2 +/-    0.66       4.6 +/-    0.66  0.030 / 0.050
G24     296.4          38.0                4.8 +/-    2.20       7.3 +/-    2.20  0.030 / 0.040
G28     100.7          36.0                5.0 +/-    0.62       7.7 +/-    0.62  0.100 / 0.170