PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-00:27:40
G05     47.2           20.5                6.7 +/-    2.67      14.5 +/-    2.67  0.120 / 0.230
G13     81.5           35.5               10.8 +/-    0.85      16.9 +/-    0.85  0.250 / 0.260
G15     130.2          49.1               11.7 +/-    0.32      15.0 +/-    0.32  0.100 / 0.080
G20     243.8          32.8               10.4 +/-    1.38      17.1 +/-    1.38  0.080 / 0.070
G21     308.6          43.4                9.1 +/-    0.98      12.6 +/-    0.98  0.070 / 0.110
G25     202.4          15.7               11.1 +/-    2.07      27.3 +/-    2.07  0.050 / 0.110
G26     293.8          19.9                7.2 +/-    1.09      15.9 +/-    1.09  0.040 / 0.040
G29     145.0          76.6                9.3 +/-    0.83       9.5 +/-    0.83  0.030 / 0.050