PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-22:12:40
G10     253.6          28.3               17.7 +/-    1.51      32.1 +/-    1.51  0.130 / 0.290
G13     51.7           29.5               17.6 +/-    0.67      31.2 +/-    0.67  0.140 / 0.280
G15     80.6           56.9               19.8 +/-    0.41      23.1 +/-    0.41  0.040 / 0.050
G16     295.2          14.0               15.0 +/-    1.60      38.4 +/-    1.60  0.040 / 0.040
G18     274.5          57.9               19.1 +/-    0.72      22.1 +/-    0.72  0.070 / 0.170
G20     45.5           45.0               16.2 +/-    0.95      21.8 +/-    0.95  0.080 / 0.180
G21     339.6          63.4               18.3 +/-    0.52      20.2 +/-    0.52  0.060 / 0.070
G26     267.7          14.0               16.3 +/-    0.72      41.5 +/-    0.72  0.050 / 0.070
G29     164.2          42.2               21.0 +/-    1.30      29.5 +/-    1.30  0.080 / 0.270