PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-01:57:50
G01     318.8          18.0               11.7 +/-    0.70      27.0 +/-    0.70  0.060 / 0.070
G08     255.9          13.2               19.0 +/-    1.56      49.4 +/-    1.56  0.050 / 0.050
G10     78.7           54.2               13.6 +/-    0.56      16.3 +/-    0.56  0.130 / 0.170
G11     301.9          24.5               13.8 +/-    1.37      27.4 +/-    1.37  0.130 / 0.170
G14     301.4          71.4               12.9 +/-    0.56      13.5 +/-    0.56  0.030 / 0.040
G18     101.5          29.6               13.5 +/-    1.10      23.9 +/-    1.10  0.050 / 0.040
G31     177.8          40.3               20.3 +/-    1.30      29.4 +/-    1.30  0.060 / 0.060
G32     0.5            68.9               12.8 +/-    0.63      13.6 +/-    0.63  0.060 / 0.050