PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-04:42:40
G01     226.4          17.2                5.8 +/-    2.60      13.6 +/-    2.60  0.120 / 0.390
G03     289.5          66.6                4.4 +/-    1.18       4.7 +/-    1.18  0.140 / 0.290
G09     295.3          11.5                3.3 +/-   11.52       9.0 +/-   11.52  0.030 / 0.040
G14     86.1           25.0                5.5 +/-    0.63      10.7 +/-    0.63  0.030 / 0.040
G16     144.3          45.8                8.6 +/-    0.98      11.5 +/-    0.98  0.100 / 0.180
G22     218.8          70.8                5.6 +/-    0.76       5.9 +/-    0.76  0.100 / 0.210
G23     306.9          36.7                5.3 +/-    1.51       8.2 +/-    1.51  0.060 / 0.100
G26     95.6           53.9                6.6 +/-    0.78       7.9 +/-    0.78  0.070 / 0.090
G31     45.5           31.4                3.6 +/-    0.63       6.1 +/-    0.63  0.040 / 0.080