PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/25-06:27:40
G07     342.0          60.8                4.2 +/-    0.90       4.7 +/-    0.90  0.050 / 0.040
G08     89.3           51.9                5.0 +/-    0.72       6.2 +/-    0.72  0.040 / 0.040
G09     184.8          68.6                4.0 +/-    1.21       4.3 +/-    1.21  0.120 / 0.180
G11     142.1          15.5                5.0 +/-    1.97      12.4 +/-    1.97  0.110 / 0.140
G23     157.3          38.9                5.6 +/-    1.42       8.3 +/-    1.42  0.040 / 0.040
G27     50.6           28.4                1.5 +/-    0.48       2.8 +/-    0.48  0.050 / 0.050
G28     241.2          33.5                6.6 +/-    2.41      10.8 +/-    2.41  0.030 / 0.040
G30     305.2          37.6                3.8 +/-    1.73       5.8 +/-    1.73  0.030 / 0.030