PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-01:42:50
G01     88.8           32.1                5.5 +/-    1.15       9.2 +/-    1.15  0.060 / 0.050
G07     126.5          44.7                7.4 +/-    0.63      10.0 +/-    0.63  0.050 / 0.050
G11     69.9           40.7                4.1 +/-    1.06       5.8 +/-    1.06  0.060 / 0.050
G13     294.1          35.8                4.1 +/-    1.89       6.4 +/-    1.89  0.040 / 0.040
G15     314.0          11.1               -0.9 +/-   15.68      -2.3 +/-   15.68  0.090 / 0.090
G17     215.8          53.6                5.5 +/-    0.74       6.6 +/-    0.74  0.110 / 0.100
G19     215.2          28.6                6.4 +/-    1.50      11.5 +/-    1.50  0.040 / 0.040
G28     352.9          61.6                3.6 +/-    0.76       4.0 +/-    0.76  0.050 / 0.080
G30     113.0          70.8                6.4 +/-    0.41       6.8 +/-    0.41  0.060 / 0.080