PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/09-05:43:00
G07     355.3          64.3                0.4 +/-    0.76       0.4 +/-    0.76  0.060 / 0.120
G08     76.9           51.3                2.2 +/-    1.08       2.7 +/-    1.08  0.080 / 0.100
G09     181.8          60.7                6.9 +/-    1.06       7.8 +/-    1.06  0.030 / 0.050
G11     137.3          20.3                5.1 +/-    1.61      11.2 +/-    1.61  0.040 / 0.050
G23     159.1          31.0                4.7 +/-    1.05       8.0 +/-    1.05  0.030 / 0.050
G27     45.2           23.6               -0.6 +/-    1.51      -1.2 +/-    1.51  0.040 / 0.040
G28     248.3          39.1                5.2 +/-    1.10       7.6 +/-    1.10  0.030 / 0.040
G30     311.7          43.3               -0.8 +/-    1.17      -1.2 +/-    1.17  0.050 / 0.040