PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-19:28:10
G02     217.9          61.6               14.4 +/-    1.17      16.1 +/-    1.17  0.110 / 0.220
G06     54.5           73.5               10.3 +/-    0.52      10.7 +/-    0.52  0.130 / 0.250
G12     318.1          35.5               10.9 +/-    1.93      17.1 +/-    1.93  0.040 / 0.060
G17     57.5           32.4               10.5 +/-    2.65      17.5 +/-    2.65  0.050 / 0.060
G19     42.1           47.1               11.0 +/-    0.93      14.4 +/-    0.93  0.090 / 0.050
G24     262.9          40.9               14.6 +/-    2.52      20.9 +/-    2.52  0.060 / 0.060
G28     122.2          17.2               13.3 +/-    0.92      31.4 +/-    0.92  0.080 / 0.050