PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-05:27:40
G02     49.8           40.3                2.5 +/-    0.93       3.5 +/-    0.93  0.040 / 0.040
G05     84.8           68.4                3.7 +/-    0.53       4.0 +/-    0.53  0.030 / 0.050
G12     189.8          48.9                4.5 +/-    2.10       5.7 +/-    2.10  0.030 / 0.070
G21     262.6          12.3                3.5 +/-    3.17       9.2 +/-    3.17  0.050 / 0.040
G25     255.8          58.6                4.7 +/-    0.73       5.5 +/-    0.73  0.020 / 0.030
G29     323.9          47.8                3.8 +/-    1.15       4.9 +/-    1.15  0.020 / 0.030