PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-10:57:50
G01     313.8          27.7                4.8 +/-    0.93       8.9 +/-    0.93  0.100 / 0.110
G10     96.0           45.1                5.7 +/-    1.20       7.6 +/-    1.20  0.070 / 0.120
G11     290.7          27.3                6.0 +/-    1.40      11.2 +/-    1.40  0.050 / 0.040
G14     335.8          70.5                4.7 +/-    0.62       5.0 +/-    0.62  0.050 / 0.050
G18     288.8          48.9                4.2 +/-    2.68       5.3 +/-    2.68  0.040 / 0.030
G20     114.6          20.5                5.2 +/-    1.37      11.4 +/-    1.37  0.040 / 0.030
G25     90.1           13.0                4.2 +/-    1.64      11.0 +/-    1.64  0.050 / 0.050
G31     173.4          53.9                8.5 +/-    0.37      10.3 +/-    0.37  0.040 / 0.040
G32     16.1           63.1                4.8 +/-    0.54       5.3 +/-    0.54  0.140 / 0.240