PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-02:27:20
G02     39.2           49.6                5.0 +/-    1.43       6.3 +/-    1.43  0.050 / 0.040
G05     122.6          66.7                6.5 +/-    0.60       7.0 +/-    0.60  0.030 / 0.040
G06     56.0           14.0                4.8 +/-    2.65      12.1 +/-    2.65  0.040 / 0.040
G12     197.2          63.3                7.8 +/-    0.38       8.7 +/-    0.38  0.030 / 0.040
G25     285.2          57.4               10.3 +/-    3.53      12.0 +/-    3.53  0.030 / 0.030
G29     314.0          36.6                6.0 +/-    1.03       9.3 +/-    1.03  0.030 / 0.030