PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-19:27:40
G02     13.1           69.0               12.3 +/-    0.66      13.1 +/-    0.66  0.130 / 0.410
G05     161.2          46.1               14.8 +/-    1.42      19.6 +/-    1.42  0.100 / 0.410
G06     47.3           26.8                9.6 +/-    1.72      18.1 +/-    1.72  0.030 / 0.040
G12     240.0          79.4               11.1 +/-    0.53      11.3 +/-    0.53  0.030 / 0.030
G19     89.8           16.4               11.2 +/-    1.56      27.0 +/-    1.56  0.060 / 0.090
G20     197.1          14.0               15.3 +/-    0.91      39.0 +/-    0.91  0.050 / 0.080
G24     218.8          12.7               14.7 +/-    2.86      38.6 +/-    2.86  0.060 / 0.040
G25     309.3          47.3               12.6 +/-    1.31      16.4 +/-    1.31  0.060 / 0.070
G29     298.5          20.2               11.7 +/-    3.01      25.7 +/-    3.01  0.070 / 0.200