PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-15:12:30
G02     209.8          46.9               10.1 +/-    0.96      13.2 +/-    0.96  0.080 / 0.130
G06     102.8          79.0                9.1 +/-    0.76       9.3 +/-    0.76  0.070 / 0.140
G12     313.9          26.3                9.3 +/-    2.72      17.6 +/-    2.72  0.080 / 0.190
G17     45.6           42.1                8.0 +/-    0.56      11.3 +/-    0.56  0.090 / 0.190
G19     28.0           54.9                8.7 +/-    0.81      10.4 +/-    0.81  0.050 / 0.080
G24     280.6          41.7                7.7 +/-    1.06      10.9 +/-    1.06  0.060 / 0.080
G28     112.5          27.1                9.3 +/-    1.15      17.4 +/-    1.15  0.050 / 0.090