PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-15:28:00
G02     204.2          31.9                7.8 +/-    1.48      13.1 +/-    1.48  0.150 / 0.090
G06     153.1          70.5                8.6 +/-    0.68       9.1 +/-    0.68  0.140 / 0.080
G12     309.0          19.5                6.2 +/-    1.86      13.8 +/-    1.86  0.070 / 0.180
G17     37.4           48.0                8.3 +/-    1.54      10.8 +/-    1.54  0.100 / 0.180
G19     351.9          66.6                8.0 +/-    0.33       8.7 +/-    0.33  0.040 / 0.030
G24     296.3          39.3                7.1 +/-    7.31      10.5 +/-    7.31  0.040 / 0.030
G28     102.3          31.4                7.6 +/-    1.18      13.0 +/-    1.18  0.040 / 0.030