PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-16:42:50
G02     215.9          57.7               12.3 +/-    0.75      14.2 +/-    0.75  0.050 / 0.080
G06     59.0           74.9               11.2 +/-    0.58      11.6 +/-    0.58  0.060 / 0.100
G12     318.8          36.3               11.1 +/-    1.77      17.3 +/-    1.77  0.060 / 0.080
G17     59.3           30.1               10.2 +/-    0.36      17.9 +/-    0.36  0.040 / 0.100
G19     41.9           47.5               10.9 +/-    0.70      14.2 +/-    0.70  0.070 / 0.110
G24     267.9          41.4               11.2 +/-    1.11      15.9 +/-    1.11  0.060 / 0.130
G28     123.1          13.2               12.5 +/-    1.32      32.4 +/-    1.32  0.030 / 0.040