PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-09:57:30
G07     309.9          48.0                4.1 +/-    1.02       5.3 +/-    1.02  0.130 / 0.140
G08     122.7          43.0                6.7 +/-    0.94       9.2 +/-    0.94  0.080 / 0.160
G09     280.5          83.5                3.5 +/-    0.25       3.5 +/-    0.25  0.050 / 0.050
G16     42.5           19.3                2.9 +/-    2.07       6.4 +/-    2.07  0.060 / 0.040
G23     146.6          61.0                7.0 +/-    0.40       7.8 +/-    0.40  0.050 / 0.050
G27     76.1           37.3                6.6 +/-    0.86      10.0 +/-    0.86  0.050 / 0.060
G28     225.4          14.6                4.0 +/-    2.42      10.0 +/-    2.42  0.030 / 0.040
G30     287.3          22.5                5.0 +/-    1.34      10.5 +/-    1.34  0.040 / 0.040