PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-09:57:50
G01     123.9          14.2                7.1 +/-    1.66      18.0 +/-    1.66  0.040 / 0.030
G07     66.3           68.4                6.4 +/-    0.46       6.9 +/-    0.46  0.030 / 0.030
G08     47.0           34.7                4.3 +/-    0.78       6.9 +/-    0.78  0.120 / 0.240
G09     174.6          27.9                6.0 +/-    1.20      11.1 +/-    1.20  0.130 / 0.250
G11     112.4          37.6                8.6 +/-    0.68      13.1 +/-    0.68  0.190 / 0.330
G13     319.8          15.2                3.5 +/-    2.54       8.6 +/-    2.54  0.120 / 0.250
G17     200.0          20.0                4.7 +/-    1.24      10.4 +/-    1.24  0.030 / 0.030
G18     98.8           18.5                6.3 +/-    2.87      14.4 +/-    2.87  0.030 / 0.030
G28     281.6          54.3                4.3 +/-    3.00       5.1 +/-    3.00  0.100 / 0.200
G30     335.5          62.7                5.3 +/-    0.72       5.9 +/-    0.72  0.100 / 0.240