PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/27-19:12:40
G01     312.9          27.9                8.5 +/-    1.37      15.6 +/-    1.37  0.080 / 0.170
G10     97.1           46.0               10.1 +/-    0.99      13.4 +/-    0.99  0.090 / 0.190
G11     291.5          27.0                8.1 +/-    1.54      15.1 +/-    1.54  0.130 / 0.290
G14     336.8          69.8                8.7 +/-    0.49       9.2 +/-    0.49  0.110 / 0.300
G18     112.5          18.3               10.8 +/-    1.17      24.8 +/-    1.17  0.030 / 0.040
G22     306.5          19.5                9.7 +/-    1.44      21.7 +/-    1.44  0.040 / 0.050
G25     89.7           14.0               11.7 +/-    2.11      29.7 +/-    2.11  0.030 / 0.020
G31     173.6          55.4               12.2 +/-    0.57      14.4 +/-    0.57  0.050 / 0.020
G32     26.4           58.5                7.9 +/-    0.70       9.1 +/-    0.70  0.040 / 0.040