PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-17:57:30
G02     212.7          51.4               17.4 +/-    0.64      21.6 +/-    0.64  0.060 / 0.060
G06     75.6           77.9               14.6 +/-    0.30      14.8 +/-    0.30  0.050 / 0.070
G12     317.4          32.5               11.1 +/-    1.50      18.5 +/-    1.50  0.070 / 0.060
G17     55.3           33.2               10.8 +/-    1.04      17.8 +/-    1.04  0.070 / 0.060
G19     36.4           50.8               12.2 +/-    2.19      15.3 +/-    2.19  0.070 / 0.140
G24     274.8          42.0               13.0 +/-    1.64      18.3 +/-    1.64  0.080 / 0.110
G28     119.6          17.0               13.2 +/-    0.83      31.2 +/-    0.83  0.050 / 0.070