PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-22:57:40
G08     316.3          15.0               10.8 +/-    3.42      26.9 +/-    3.42  0.080 / 0.050
G10     312.3          55.8               12.0 +/-    1.66      14.2 +/-    1.66  0.070 / 0.040
G14     213.4          22.8               21.2 +/-    1.71      43.5 +/-    1.71  0.030 / 0.040
G15     45.6           19.6               10.7 +/-    1.75      23.8 +/-    1.75  0.030 / 0.040
G18     20.2           63.4               12.7 +/-    0.93      14.1 +/-    0.93  0.070 / 0.090
G20     78.9           11.3               13.0 +/-    3.84      35.4 +/-    3.84  0.070 / 0.090
G21     121.4          64.8               14.3 +/-    0.74      15.6 +/-    0.74  0.050 / 0.070
G24     87.5           29.7               14.7 +/-    2.08      26.0 +/-    2.08  0.060 / 0.070
G27     286.3          37.9               10.4 +/-    0.97      15.7 +/-    0.97  0.150 / 0.310
G32     216.5          39.3               18.0 +/-    1.36      26.5 +/-    1.36  0.260 / 0.380