PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-04:13:10
G08     282.4          23.0                5.2 +/-    0.91      10.6 +/-    0.91  0.030 / 0.020
G10     24.4           63.1                2.9 +/-    1.59       3.2 +/-    1.59  0.040 / 0.030
G14     239.9          55.9                5.0 +/-    2.10       5.9 +/-    2.10  0.060 / 0.100
G18     72.5           47.9                3.3 +/-    1.16       4.3 +/-    1.16  0.050 / 0.110
G21     149.8          31.7                4.9 +/-    2.02       8.3 +/-    2.02  0.100 / 0.140
G24     49.9           22.4                3.3 +/-    2.53       6.9 +/-    2.53  0.180 / 0.130
G27     244.0          26.4                5.7 +/-    2.85      10.8 +/-    2.85  0.040 / 0.020
G31     181.7          14.1                4.2 +/-    2.89      10.8 +/-    2.89  0.040 / 0.020
G32     268.2          73.0                5.2 +/-    0.55       5.5 +/-    0.55  0.060 / 0.120