PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-22:58:10
G05     49.6           14.6                6.1 +/-    1.67      15.4 +/-    1.67  0.040 / 0.060
G10     237.6          15.8               11.9 +/-    1.55      29.0 +/-    1.55  0.050 / 0.070
G13     71.4           35.1                8.9 +/-    1.06      14.0 +/-    1.06  0.080 / 0.100
G15     119.2          54.0               11.3 +/-    0.44      13.6 +/-    0.44  0.120 / 0.120
G16     312.4          12.9                7.2 +/-    4.21      18.9 +/-    4.21  0.040 / 0.040
G20     250.7          38.6               11.2 +/-    1.85      16.7 +/-    1.85  0.030 / 0.040
G21     315.6          48.1                9.2 +/-    1.27      11.9 +/-    1.27  0.100 / 0.260
G26     285.4          19.8                6.2 +/-    1.66      13.8 +/-    1.66  0.090 / 0.250
G29     154.6          68.7               10.0 +/-    0.33      10.7 +/-    0.33  0.270 / 0.240