PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-05:27:30
G10     291.5          50.4                8.4 +/-    0.89      10.5 +/-    0.89  0.060 / 0.100
G15     46.8           31.1                5.3 +/-    0.61       9.0 +/-    0.61  0.050 / 0.090
G20     341.1          65.3                6.4 +/-    0.66       6.9 +/-    0.66  0.040 / 0.040
G21     80.6           75.6                8.3 +/-    0.98       8.6 +/-    0.98  0.040 / 0.040
G24     102.2          24.5                6.9 +/-    0.85      13.6 +/-    0.85  0.050 / 0.040
G27     306.6          31.0                6.9 +/-    2.23      11.9 +/-    2.23  0.050 / 0.040
G32     209.3          23.6                8.6 +/-    1.65      17.4 +/-    1.65  0.050 / 0.090