PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-21:27:50
G05     53.7           10.1               10.0 +/-    3.00      27.9 +/-    3.00  0.080 / 0.190
G10     246.0          21.8               14.0 +/-    2.54      29.5 +/-    2.54  0.080 / 0.120
G13     60.5           34.2               12.4 +/-    2.21      19.9 +/-    2.21  0.270 / 0.360
G15     99.0           57.7               14.0 +/-    0.67      16.2 +/-    0.67  0.170 / 0.300
G16     304.3          13.8               10.2 +/-    1.51      26.2 +/-    1.51  0.150 / 0.400
G18     261.2          52.3               13.1 +/-    1.81      16.1 +/-    1.81  0.320 / 0.400
G20     39.1           53.0               11.7 +/-    0.57      14.3 +/-    0.57  0.030 / 0.040
G21     328.2          57.3               11.9 +/-    0.36      13.9 +/-    0.36  0.030 / 0.040
G26     276.7          17.1               13.5 +/-    3.13      31.8 +/-    3.13  0.040 / 0.050
G29     161.2          52.2               13.5 +/-    0.54      16.6 +/-    0.54  0.040 / 0.050