PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-14:42:50
G02     204.3          31.5                8.9 +/-    1.93      15.1 +/-    1.93  0.130 / 0.260
G03     59.1           9.7                 4.8 +/-   16.53      13.4 +/-   16.53  0.080 / 0.180
G06     152.6          70.6               10.2 +/-    0.57      10.7 +/-    0.57  0.110 / 0.090
G12     309.1          20.0                5.1 +/-    1.21      11.2 +/-    1.21  0.070 / 0.080
G17     37.8           47.5                8.2 +/-    1.20      10.7 +/-    1.20  0.100 / 0.150
G19     351.3          66.7                7.8 +/-    0.57       8.4 +/-    0.57  0.110 / 0.210
G24     296.2          39.5                6.8 +/-    7.43      10.0 +/-    7.43  0.030 / 0.030
G28     102.2          31.4                8.4 +/-    1.28      14.3 +/-    1.28  0.030 / 0.030