PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-22:27:50
G08     321.3          10.2              -17.8 +/-   24.67     -49.3 +/-   24.67  0.080 / 0.160
G10     299.8          52.2               13.8 +/-    0.61      17.0 +/-    0.61  0.070 / 0.130
G14     210.7          15.3               19.5 +/-    2.71      48.0 +/-    2.71  0.040 / 0.040
G15     45.8           26.5               13.0 +/-    0.98      24.5 +/-    0.98  0.030 / 0.040
G18     3.6            65.6               13.9 +/-    0.78      15.1 +/-    0.78  0.100 / 0.480
G20     73.1           16.4               12.7 +/-    1.14      30.6 +/-    1.14  0.130 / 0.430
G21     105.4          71.1               15.6 +/-    0.31      16.4 +/-    0.31  0.050 / 0.110
G24     96.6           27.4               17.0 +/-    1.11      31.6 +/-    1.11  0.050 / 0.100
G27     296.2          36.0               15.1 +/-    1.59      23.5 +/-    1.59  0.080 / 0.070
G32     212.4          31.3               15.7 +/-    2.07      26.8 +/-    2.07  0.070 / 0.080