PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-21:13:10
G01     296.8          38.4                7.2 +/-    1.70      10.8 +/-    1.70  0.040 / 0.100
G03     310.1          12.9                7.2 +/-    1.83      18.7 +/-    1.83  0.060 / 0.090
G10     115.6          33.1                9.7 +/-    0.68      15.9 +/-    0.68  0.070 / 0.130
G11     270.9          27.5                8.5 +/-    1.08      15.6 +/-    1.08  0.070 / 0.130
G14     17.1           61.4                6.7 +/-    0.96       7.5 +/-    0.96  0.020 / 0.020
G22     312.6          33.4                5.4 +/-    1.49       8.9 +/-    1.49  0.020 / 0.020
G25     71.4           18.5                7.6 +/-    0.74      17.4 +/-    0.74  0.060 / 0.040
G31     157.8          74.3                8.5 +/-    0.36       8.8 +/-    0.36  0.030 / 0.040
G32     45.4           46.3                6.1 +/-    0.90       8.0 +/-    0.90  0.090 / 0.090