PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-01:58:00
G01     317.5          21.0                7.4 +/-    3.62      16.0 +/-    3.62  0.110 / 0.300
G08     252.7          11.3               12.3 +/-    2.60      33.3 +/-    2.60  0.100 / 0.230
G10     84.4           52.1                9.5 +/-    0.55      11.6 +/-    0.55  0.030 / 0.040
G11     298.4          26.0                9.1 +/-    1.89      17.4 +/-    1.89  0.020 / 0.030
G14     313.7          71.6                9.9 +/-    0.72      10.4 +/-    0.72  0.140 / 0.240
G18     104.6          27.0               10.4 +/-    1.31      19.4 +/-    1.31  0.150 / 0.300
G22     302.1          12.7                8.1 +/-    1.74      21.2 +/-    1.74  0.030 / 0.040
G25     95.1           10.0              -18.6 +/-   12.32     -51.9 +/-   12.32  0.030 / 0.030
G31     177.1          44.3               14.7 +/-    1.07      20.0 +/-    1.07  0.120 / 0.000
G32     8.0            66.5                8.9 +/-    0.55       9.6 +/-    0.55  0.050 / 0.050