PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-23:12:40
G08     309.6          19.2               11.7 +/-    0.93      26.2 +/-    0.93  0.030 / 0.030
G10     327.4          59.1               12.0 +/-    0.46      13.8 +/-    0.46  0.040 / 0.030
G14     217.4          30.9               17.1 +/-    2.08      29.3 +/-    2.08  0.070 / 0.090
G15     46.5           12.3                9.1 +/-    1.84      24.1 +/-    1.84  0.070 / 0.090
G18     36.0           60.1               12.6 +/-    0.75      14.3 +/-    0.75  0.030 / 0.050
G21     132.4          56.9               15.3 +/-    0.61      17.8 +/-    0.61  0.030 / 0.040
G24     77.3           30.6               12.1 +/-    0.84      21.0 +/-    0.84  0.050 / 0.060
G27     274.9          37.8               15.0 +/-    2.00      22.7 +/-    2.00  0.060 / 0.070
G32     222.3          47.7               13.9 +/-    2.43      18.1 +/-    2.43  0.130 / 0.150