PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-00:12:40
G01     95.5           30.5                9.6 +/-    1.65      16.7 +/-    1.65  0.040 / 0.040
G07     120.9          49.8               10.2 +/-    0.73      12.9 +/-    0.73  0.040 / 0.040
G08     42.1           13.7                5.1 +/-    4.18      13.2 +/-    4.18  0.070 / 0.100
G11     77.9           43.0                8.0 +/-    1.16      11.2 +/-    1.16  0.060 / 0.090
G13     300.3          33.8                6.6 +/-    1.78      10.8 +/-    1.78  0.030 / 0.040
G17     212.0          46.9               10.6 +/-    0.62      13.9 +/-    0.62  0.040 / 0.050
G19     212.7          23.1               11.2 +/-    2.64      22.9 +/-    2.64  0.210 / 0.560
G28     341.4          61.9                7.0 +/-    0.71       7.8 +/-    0.71  0.200 / 0.590
G30     96.0           75.3                9.7 +/-    0.52      10.0 +/-    0.52  0.040 / 0.070