PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-21:57:50
G08     308.8          19.5               12.2 +/-    1.68      27.2 +/-    1.68  0.020 / 0.040
G10     329.8          59.5                7.8 +/-    0.51       8.9 +/-    0.51  0.030 / 0.040
G14     218.0          31.9               12.5 +/-    1.11      21.1 +/-    1.11  0.050 / 0.070
G15     46.7           10.8                9.2 +/-    1.67      25.1 +/-    1.67  0.050 / 0.080
G18     38.9           59.3                9.6 +/-    0.28      10.9 +/-    0.28  0.060 / 0.100
G21     133.7          54.9               11.3 +/-    0.63      13.4 +/-    0.63  0.060 / 0.080
G24     75.9           30.6               10.4 +/-    0.70      18.0 +/-    0.70  0.040 / 0.050
G27     273.3          37.6               12.7 +/-    0.90      19.3 +/-    0.90  0.030 / 0.050
G32     223.3          48.7               12.2 +/-    0.79      15.7 +/-    0.79  0.040 / 0.050