PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-08:27:50
G07     335.4          59.0                5.0 +/-    1.20       5.7 +/-    1.20  0.040 / 0.050
G08     94.2           51.6                6.5 +/-    0.38       8.1 +/-    0.38  0.040 / 0.050
G09     178.7          68.4                5.8 +/-    1.29       6.2 +/-    1.29  0.090 / 0.120
G11     144.0          14.4                5.0 +/-    2.50      12.6 +/-    2.50  0.110 / 0.110
G23     156.3          41.4                7.8 +/-    0.67      11.2 +/-    0.67  0.070 / 0.070
G27     54.9           31.9                3.5 +/-    0.67       5.9 +/-    0.67  0.090 / 0.080
G28     237.9          29.6                5.3 +/-    1.73       9.4 +/-    1.73  0.040 / 0.070
G30     301.9          34.5                5.2 +/-    0.78       8.4 +/-    0.78  0.050 / 0.080