PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-17:12:30
G02     204.5          32.6               14.9 +/-    1.18      24.7 +/-    1.18  0.100 / 0.240
G06     157.1          70.5               14.2 +/-    1.12      14.9 +/-    1.12  0.080 / 0.160
G12     308.9          17.1               12.1 +/-    2.02      28.6 +/-    2.02  0.040 / 0.060
G17     39.8           46.0               10.5 +/-    0.76      14.0 +/-    0.76  0.060 / 0.100
G19     9.3            63.3               12.4 +/-    0.53      13.7 +/-    0.53  0.080 / 0.090
G24     298.5          37.6               12.4 +/-    1.74      18.8 +/-    1.74  0.060 / 0.090
G28     104.2          30.1               12.2 +/-    0.75      21.3 +/-    0.75  0.080 / 0.120