PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/03-21:57:40
G07     321.4          54.1                9.1 +/-    1.85      10.9 +/-    1.85  0.140 / 0.360
G08     113.7          46.7                9.8 +/-    0.74      12.9 +/-    0.74  0.160 / 0.400
G09     241.3          83.3                7.7 +/-    0.90       7.8 +/-    0.90  0.050 / 0.070
G16     43.3           19.6                7.2 +/-    0.87      16.1 +/-    0.87  0.040 / 0.070
G23     151.2          56.4                9.6 +/-    1.06      11.3 +/-    1.06  0.040 / 0.050
G27     71.1           37.6                7.2 +/-    1.04      10.8 +/-    1.04  0.030 / 0.060
G28     228.4          17.0               10.0 +/-    1.40      23.7 +/-    1.40  0.090 / 0.310
G30     292.3          27.0                8.9 +/-    2.19      16.6 +/-    2.19  0.090 / 0.280