PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-23:13:00
G10     275.5          42.1               18.1 +/-    0.91      25.4 +/-    0.91  0.060 / 0.050
G13     39.5           13.8               15.4 +/-    1.78      39.5 +/-    1.78  0.080 / 0.050
G15     52.8           43.3               17.2 +/-    0.71      23.8 +/-    0.71  0.030 / 0.040
G18     318.0          66.2               17.4 +/-    0.43      18.9 +/-    0.43  0.030 / 0.040
G20     60.3           28.3               14.8 +/-    1.90      26.9 +/-    1.90  0.120 / 0.160
G21     31.1           76.1               19.2 +/-    0.73      19.8 +/-    0.73  0.110 / 0.180
G24     114.9          18.4               22.2 +/-    1.27      50.8 +/-    1.27  0.060 / 0.150
G27     313.3          26.1               16.7 +/-    2.06      31.8 +/-    2.06  0.070 / 0.160
G29     167.2          19.9               25.4 +/-    1.98      56.0 +/-    1.98  0.080 / 0.120
G32     206.4          14.5               29.9 +/-    3.71      75.3 +/-    3.71  0.080 / 0.120