PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/09-07:27:40
G07     36.4           69.4                6.3 +/-    0.55       6.6 +/-    0.55  0.040 / 0.050
G08     54.4           42.3                4.7 +/-    0.71       6.6 +/-    0.71  0.050 / 0.050
G09     174.3          37.6                6.9 +/-    1.31      10.4 +/-    1.31  0.030 / 0.040
G11     123.1          31.9                7.1 +/-    1.24      12.0 +/-    1.24  0.030 / 0.030
G17     198.6          10.6               -6.5 +/-   14.63     -17.8 +/-   14.63  0.080 / 0.160
G18     107.7          13.5                6.1 +/-    1.91      15.6 +/-    1.91  0.070 / 0.150
G23     161.2          14.8                7.1 +/-    1.75      17.7 +/-    1.75  0.110 / 0.240
G27     38.8           13.5                1.2 +/-    0.84       3.1 +/-    0.84  0.090 / 0.210
G28     265.8          48.4                6.1 +/-    1.04       7.9 +/-    1.04  0.170 / 0.500
G30     324.3          54.0                5.5 +/-    0.56       6.6 +/-    0.56  0.200 / 0.410