PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-17:28:10
G02     209.6          48.7               12.8 +/-    0.85      16.5 +/-    0.85  0.090 / 0.150
G06     103.9          79.3               11.4 +/-    0.41      11.6 +/-    0.41  0.090 / 0.210
G12     313.8          25.7               10.6 +/-    1.36      20.4 +/-    1.36  0.050 / 0.080
G17     46.7           41.0               10.2 +/-    1.11      14.6 +/-    1.11  0.050 / 0.080
G19     28.1           54.9               10.9 +/-    1.66      13.0 +/-    1.66  0.060 / 0.070
G24     279.5          41.9               12.8 +/-    1.17      18.1 +/-    1.17  0.060 / 0.060
G28     113.1          26.3               10.8 +/-    1.04      20.5 +/-    1.04  0.030 / 0.060