PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-03:28:00
G01     128.4          10.3              -12.1 +/-   35.53     -33.5 +/-   35.53  0.160 / 0.280
G07     53.1           68.8                8.8 +/-    0.66       9.3 +/-    0.66  0.190 / 0.360
G08     50.4           38.6                4.9 +/-    0.94       7.3 +/-    0.94  0.040 / 0.040
G09     176.4          36.0               10.7 +/-    0.88      16.7 +/-    0.88  0.030 / 0.040
G11     118.2          34.7               10.0 +/-    0.97      15.9 +/-    0.97  0.030 / 0.040
G17     198.5          15.4                5.6 +/-    3.04      13.8 +/-    3.04  0.030 / 0.040
G23     161.5          11.3                6.0 +/-    1.68      16.3 +/-    1.68  0.140 / 0.240
G27     38.0           10.8                5.3 +/-    2.46      14.6 +/-    2.46  0.130 / 0.210
G28     271.0          50.3                8.0 +/-    0.87      10.1 +/-    0.87  0.180 / 0.350
G30     328.8          57.8                6.9 +/-    0.53       7.9 +/-    0.53  0.210 / 0.380