PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-19:27:40
G02     61.9           31.2               15.8 +/-    1.19      27.0 +/-    1.19  0.090 / 0.220
G05     57.4           63.2               14.9 +/-    0.56      16.5 +/-    0.56  0.090 / 0.260
G12     184.6          28.9               18.2 +/-    1.96      32.6 +/-    1.96  0.100 / 0.100
G13     127.4          17.4               18.9 +/-    3.29      44.4 +/-    3.29  0.050 / 0.130
G15     162.3          14.4               22.2 +/-    1.81      56.0 +/-    1.81  0.060 / 0.080
G20     209.4          64.6               18.4 +/-    1.21      20.1 +/-    1.21  0.070 / 0.070
G21     274.2          20.3               14.1 +/-    0.78      30.7 +/-    0.78  0.040 / 0.060
G25     226.7          48.3               17.6 +/-    1.50      22.7 +/-    1.50  0.040 / 0.050
G29     334.0          61.4               16.9 +/-    0.61      19.0 +/-    0.61  0.130 / 0.320