PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-18:27:30
G08     301.8          21.6                7.4 +/-    1.20      15.6 +/-    1.20  0.080 / 0.090
G10     347.3          61.9                7.1 +/-    0.43       7.9 +/-    0.43  0.060 / 0.110
G14     223.4          39.0               11.4 +/-    2.22      16.9 +/-    2.22  0.070 / 0.060
G18     53.8           54.4                8.6 +/-    0.87      10.3 +/-    0.87  0.050 / 0.070
G21     140.5          43.5               11.1 +/-    0.49      15.3 +/-    0.49  0.060 / 0.040
G24     65.8           29.3                8.6 +/-    1.14      15.2 +/-    1.14  0.050 / 0.050
G27     262.6          35.3               11.0 +/-    1.71      17.3 +/-    1.71  0.040 / 0.060
G32     232.2          59.0               10.5 +/-    1.63      12.1 +/-    1.63  0.040 / 0.060