PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-06:42:50
G07     354.1          64.3                6.1 +/-    0.38       6.6 +/-    0.38  0.050 / 0.060
G08     76.1           50.8                7.0 +/-    0.52       8.7 +/-    0.52  0.060 / 0.070
G09     175.1          56.1                8.8 +/-    0.50      10.4 +/-    0.50  0.030 / 0.030
G11     136.9          21.1                7.2 +/-    2.00      15.3 +/-    2.00  0.030 / 0.030
G23     159.2          31.6                7.5 +/-    1.11      12.8 +/-    1.11  0.120 / 0.140
G27     47.0           26.2                4.6 +/-    2.35       8.7 +/-    2.35  0.080 / 0.170
G28     246.5          37.0                9.4 +/-    1.62      14.4 +/-    1.62  0.040 / 0.040
G30     309.8          41.3                6.4 +/-    1.20       9.1 +/-    1.20  0.050 / 0.040