PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-03:57:40
G08     292.0          23.5                7.1 +/-    1.40      14.3 +/-    1.40  0.040 / 0.030
G10     3.9            63.1                5.8 +/-    0.46       6.4 +/-    0.46  0.030 / 0.020
G14     230.0          47.9                8.0 +/-    1.27      10.4 +/-    1.27  0.100 / 0.120
G18     60.8           52.8                5.8 +/-    1.06       7.0 +/-    1.06  0.090 / 0.100
G21     145.8          40.9                9.7 +/-    0.95      13.8 +/-    0.95  0.040 / 0.080
G24     57.7           26.8                6.2 +/-    0.62      11.6 +/-    0.62  0.040 / 0.080
G27     253.1          31.6                9.3 +/-    2.26      15.7 +/-    2.26  0.050 / 0.090
G32     244.9          66.6                6.9 +/-    0.71       7.4 +/-    0.71  0.050 / 0.080