PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-19:13:10
G10     255.7          29.9               15.8 +/-    2.18      27.8 +/-    2.18  0.140 / 0.400
G13     49.6           27.7               10.3 +/-    0.79      18.9 +/-    0.79  0.170 / 0.370
G15     74.4           55.1               14.2 +/-    0.43      17.0 +/-    0.43  0.050 / 0.070
G16     295.0          13.2               14.1 +/-    0.91      36.6 +/-    0.91  0.050 / 0.070
G18     279.8          60.1               15.8 +/-    1.21      18.0 +/-    1.21  0.040 / 0.050
G20     46.3           44.3               12.9 +/-    1.16      17.6 +/-    1.16  0.040 / 0.050
G21     346.7          66.1               12.7 +/-    1.11      13.7 +/-    1.11  0.100 / 0.270
G26     267.4          12.9               14.5 +/-    1.40      38.0 +/-    1.40  0.120 / 0.270
G27     321.8          11.2               -4.9 +/-   40.23     -13.3 +/-   40.23  0.100 / 0.320
G29     163.6          37.6               17.7 +/-    0.71      26.9 +/-    0.71  0.090 / 0.310