PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-17:58:00
G02     203.5          34.0               12.2 +/-    1.12      19.7 +/-    1.12  0.060 / 0.090
G06     159.4          68.9               12.7 +/-    0.52      13.5 +/-    0.52  0.050 / 0.090
G12     306.5          13.7               10.3 +/-    4.13      26.5 +/-    4.13  0.070 / 0.100
G17     34.0           50.7               10.1 +/-    1.06      12.7 +/-    1.06  0.080 / 0.110
G19     3.8            64.7               10.3 +/-    0.78      11.3 +/-    0.78  0.060 / 0.080
G24     297.7          37.9               10.1 +/-    2.30      15.2 +/-    2.30  0.100 / 0.130
G28     99.5           36.0               11.8 +/-    0.80      18.4 +/-    0.80  0.110 / 0.190