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               17.8 +/-    0.76      21.4 +/-    0.76  0.110 / 0.050
G06     80.7           78.8               13.1 +/-    0.75      13.4 +/-    0.75  0.070 / 0.040
G12     315.5          29.1               11.5 +/-    1.85      20.5 +/-    1.85  0.110 / 0.300
G17     51.4           37.1               11.1 +/-    0.72      17.0 +/-    0.72  0.120 / 0.290
G19     33.5           52.0               12.6 +/-    0.69      15.6 +/-    0.69  0.040 / 0.060
G24     272.8          42.2               13.8 +/-    0.59      19.4 +/-    0.59  0.040 / 0.080
G28     116.8          22.6               13.1 +/-    1.74      27.1 +/-    1.74  0.070 / 0.070