PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-15:57:40
G02     204.3          32.8               13.6 +/-    1.41      22.5 +/-    1.41  0.040 / 0.030
G06     152.3          71.0               12.0 +/-    0.84      12.6 +/-    0.84  0.030 / 0.040
G12     309.2          19.7               10.3 +/-    2.13      22.7 +/-    2.13  0.100 / 0.240
G17     37.6           47.8                8.7 +/-    0.34      11.3 +/-    0.34  0.100 / 0.250
G19     353.9          66.3                7.9 +/-    1.13       8.5 +/-    1.13  0.070 / 0.090
G24     295.7          39.5               10.4 +/-    1.41      15.3 +/-    1.41  0.060 / 0.080
G28     102.9          31.0               11.2 +/-    1.10      19.3 +/-    1.10  0.040 / 0.040