PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-14:12:40
G02     201.8          19.8                8.1 +/-    1.44      17.9 +/-    1.44  0.110 / 0.180
G06     166.1          58.2                7.6 +/-    0.76       8.7 +/-    0.76  0.100 / 0.220
G13     225.3          11.6                7.0 +/-    2.10      18.9 +/-    2.10  0.090 / 0.090
G17     26.9           56.5                7.1 +/-    1.09       8.3 +/-    1.09  0.090 / 0.110
G19     317.0          70.1                6.5 +/-    0.66       6.9 +/-    0.66  0.190 / 0.430
G24     307.3          32.7                4.8 +/-    1.59       7.9 +/-    1.59  0.210 / 0.390
G28     90.1           38.7                6.2 +/-    0.97       9.2 +/-    0.97  0.030 / 0.040
G30     158.1          14.3                8.5 +/-    2.12      21.4 +/-    2.12  0.040 / 0.030