PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-17:12:40
G02     62.7           30.0               13.5 +/-    0.42      23.6 +/-    0.42  0.070 / 0.120
G05     56.0           61.2               14.0 +/-    0.41      15.7 +/-    0.41  0.140 / 0.140
G12     185.1          29.5               15.5 +/-    1.29      27.5 +/-    1.29  0.050 / 0.050
G13     127.0          17.5               17.5 +/-    2.30      40.9 +/-    2.30  0.040 / 0.040
G15     161.5          14.9               17.9 +/-    2.11      44.6 +/-    2.11  0.050 / 0.070
G20     210.1          63.6               17.7 +/-    0.71      19.5 +/-    0.71  0.060 / 0.070
G21     274.8          21.4               12.4 +/-    2.52      26.5 +/-    2.52  0.120 / 0.360
G25     228.7          48.7               17.2 +/-    0.74      22.0 +/-    0.74  0.090 / 0.320
G29     336.1          63.0               13.2 +/-    0.52      14.7 +/-    0.52  0.050 / 0.050