PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-00:42:30
G01     129.2          9.9               -14.9 +/-   28.04     -41.7 +/-   28.04  0.090 / 0.090
G07     43.5           69.7                7.3 +/-    0.75       7.7 +/-    0.75  0.100 / 0.100
G08     53.7           43.1                6.8 +/-    1.05       9.4 +/-    1.05  0.140 / 0.250
G09     179.4          40.1               11.0 +/-    1.03      15.9 +/-    1.03  0.280 / 0.300
G11     123.7          32.9                9.7 +/-    1.70      16.0 +/-    1.70  0.040 / 0.040
G17     200.0          11.6                0.1 +/-   22.85       0.3 +/-   22.85  0.050 / 0.040
G28     272.9          51.9                9.8 +/-    2.75      12.1 +/-    2.75  0.030 / 0.030
G30     335.3          61.3                5.6 +/-    0.50       6.3 +/-    0.50  0.030 / 0.030