PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-18:57:40
G08     274.6          20.5                8.4 +/-    1.36      18.2 +/-    1.36  0.080 / 0.140
G10     45.9           61.3                6.8 +/-    0.55       7.6 +/-    0.55  0.070 / 0.130
G11     316.1          11.9                7.8 +/-    3.92      20.8 +/-    3.92  0.030 / 0.030
G14     253.0          61.6                8.8 +/-    1.15       9.8 +/-    1.15  0.030 / 0.030
G18     85.7           39.3                8.4 +/-    0.94      12.3 +/-    0.94  0.030 / 0.040
G24     43.6           16.2                6.9 +/-    1.59      16.7 +/-    1.59  0.030 / 0.040
G27     236.2          20.3                9.9 +/-    1.39      21.6 +/-    1.39  0.060 / 0.140
G31     181.0          21.6               10.9 +/-    2.81      23.1 +/-    2.81  0.050 / 0.130
G32     305.3          75.8                8.5 +/-    0.91       8.8 +/-    0.91  0.090 / 0.260