PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-15:12:20
G02     35.8           52.5                8.7 +/-    0.44      10.7 +/-    0.44  0.030 / 0.040
G05     136.6          65.1               11.5 +/-    0.70      12.5 +/-    0.70  0.050 / 0.050
G06     56.1           11.4                8.7 +/-    3.31      23.5 +/-    3.31  0.040 / 0.050
G12     191.4          62.4                9.6 +/-    2.23      10.7 +/-    2.23  0.040 / 0.060
G25     290.7          55.3                8.2 +/-    0.74       9.7 +/-    0.74  0.200 / 0.300
G29     309.9          30.7                9.4 +/-    0.70      16.2 +/-    0.70  0.230 / 0.310