PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/03-21:57:50
G07     321.4          54.1                9.9 +/-    0.72      11.9 +/-    0.72  0.060 / 0.070
G08     113.7          46.7                9.6 +/-    0.63      12.6 +/-    0.63  0.050 / 0.060
G09     241.3          83.3               10.6 +/-    0.73      10.7 +/-    0.73  0.150 / 0.330
G16     43.3           19.6                7.1 +/-    2.29      15.9 +/-    2.29  0.190 / 0.280
G23     151.2          56.4               10.2 +/-    0.48      12.0 +/-    0.48  0.040 / 0.040
G27     71.1           37.6                9.4 +/-    0.65      14.2 +/-    0.65  0.030 / 0.050
G28     228.4          17.0                8.3 +/-    4.07      19.8 +/-    4.07  0.190 / 0.330
G30     292.3          27.0                9.5 +/-    2.26      17.7 +/-    2.26  0.090 / 0.320