PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-15:57:30
G02     210.5          47.7               11.7 +/-    0.58      15.2 +/-    0.58  0.060 / 0.100
G06     89.1           78.1               10.7 +/-    0.43      10.9 +/-    0.43  0.080 / 0.110
G12     316.6          32.3                8.0 +/-    1.43      13.3 +/-    1.43  0.080 / 0.130
G17     50.6           37.1                8.8 +/-    1.41      13.5 +/-    1.41  0.060 / 0.100
G19     21.9           57.8               10.5 +/-    1.32      12.2 +/-    1.32  0.030 / 0.020
G24     276.1          43.1                9.2 +/-    1.74      12.8 +/-    1.74  0.040 / 0.020
G28     115.7          20.8                8.9 +/-    1.56      19.2 +/-    1.56  0.050 / 0.040