PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-01:42:20
G02     31.1           56.8                7.9 +/-    0.74       9.3 +/-    0.74  0.040 / 0.060
G05     141.3          60.1                9.8 +/-    1.12      11.1 +/-    1.12  0.050 / 0.060
G06     51.0           20.5                5.5 +/-    0.44      12.0 +/-    0.44  0.030 / 0.030
G12     211.2          72.8               10.3 +/-    0.83      10.8 +/-    0.83  0.030 / 0.030
G19     97.5           11.0                8.4 +/-    2.17      23.0 +/-    2.17  0.030 / 0.040
G25     300.2          52.2                7.8 +/-    1.05       9.6 +/-    1.05  0.030 / 0.050
G29     307.2          29.5                7.5 +/-    1.21      13.2 +/-    1.21  0.080 / 0.200