PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-16:12:30
G02     212.2          50.9                9.9 +/-    0.84      12.3 +/-    0.84  0.040 / 0.040
G06     74.4           76.8                8.8 +/-    0.27       9.0 +/-    0.27  0.040 / 0.040
G12     317.8          34.9                9.7 +/-    1.22      15.5 +/-    1.22  0.070 / 0.080
G17     53.1           35.1                8.2 +/-    0.66      13.0 +/-    0.66  0.050 / 0.090
G19     26.6           55.8                8.7 +/-    0.46      10.3 +/-    0.46  0.030 / 0.040
G24     271.8          43.0                8.5 +/-    1.26      11.8 +/-    1.26  0.030 / 0.040
G28     118.1          18.5                9.8 +/-    0.92      22.5 +/-    0.92  0.050 / 0.070