PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-21:28:00
G08     317.8          13.8               14.7 +/-    1.42      37.6 +/-    1.42  0.070 / 0.110
G10     309.3          55.1               17.7 +/-    0.61      21.1 +/-    0.61  0.070 / 0.120
G14     212.8          20.9               24.1 +/-    2.44      52.0 +/-    2.44  0.050 / 0.080
G15     45.5           20.6               14.7 +/-    0.79      31.8 +/-    0.79  0.080 / 0.070
G18     17.7           63.7               17.7 +/-    0.58      19.5 +/-    0.58  0.060 / 0.080
G20     77.4           13.0               17.2 +/-    0.81      44.8 +/-    0.81  0.050 / 0.100
G21     118.8          65.5               21.4 +/-    0.44      23.2 +/-    0.44  0.040 / 0.050
G24     89.6           29.3               20.0 +/-    0.96      35.5 +/-    0.96  0.040 / 0.050
G27     288.7          37.6               17.8 +/-    1.17      27.0 +/-    1.17  0.130 / 0.300
G32     215.4          37.3               23.6 +/-    3.04      35.9 +/-    3.04  0.130 / 0.350