PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-19:12:30
G02     212.1          54.1               16.3 +/-    0.82      19.6 +/-    0.82  0.110 / 0.200
G06     80.7           78.8               12.1 +/-    0.47      12.3 +/-    0.47  0.100 / 0.210
G12     315.5          29.1                9.6 +/-    1.37      17.2 +/-    1.37  0.050 / 0.060
G17     51.4           37.1               10.4 +/-    0.86      15.8 +/-    0.86  0.040 / 0.060
G19     33.5           52.0               12.4 +/-    1.47      15.2 +/-    1.47  0.060 / 0.040
G24     272.8          42.2               12.8 +/-    3.11      18.0 +/-    3.11  0.070 / 0.040
G28     116.8          22.6               13.0 +/-    1.28      26.8 +/-    1.28  0.080 / 0.070