PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-00:27:40
G02     230.3          72.1                9.2 +/-    0.44       9.7 +/-    0.44  0.060 / 0.090
G05     173.0          12.2               11.3 +/-    2.19      30.0 +/-    2.19  0.060 / 0.090
G06     42.7           67.5                7.6 +/-    0.46       8.1 +/-    0.46  0.040 / 0.040
G12     320.2          43.8                8.4 +/-    0.47      11.6 +/-    0.47  0.040 / 0.050
G17     66.7           24.6                9.1 +/-    2.20      17.9 +/-    2.20  0.190 / 0.300
G19     51.4           41.8                7.9 +/-    1.50      11.1 +/-    1.50  0.180 / 0.220
G24     249.4          37.4               10.7 +/-    1.96      16.3 +/-    1.96  0.050 / 0.060