PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-20:43:00
G01     81.4           32.8               12.1 +/-    0.93      20.0 +/-    0.93  0.130 / 0.100
G07     131.5          33.5               15.1 +/-    1.12      24.6 +/-    1.12  0.110 / 0.130
G11     59.8           35.9               13.2 +/-    1.00      20.5 +/-    1.00  0.050 / 0.080
G13     285.5          38.3               17.2 +/-    0.80      25.7 +/-    0.80  0.060 / 0.070
G15     309.6          13.2               10.3 +/-    3.04      26.8 +/-    3.04  0.040 / 0.050
G17     219.6          61.5               16.4 +/-    1.44      18.4 +/-    1.44  0.040 / 0.040
G18     54.8           20.7               11.5 +/-    2.70      25.0 +/-    2.70  0.080 / 0.090
G19     217.5          33.6               16.3 +/-    1.08      26.6 +/-    1.08  0.070 / 0.110
G28     353.5          61.6               12.9 +/-    0.70      14.5 +/-    0.70  0.030 / 0.030
G30     123.2          69.1               15.9 +/-    0.66      16.8 +/-    0.66  0.030 / 0.030