PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-02:12:30
G02     36.6           52.0                9.4 +/-    0.82      11.5 +/-    0.82  0.030 / 0.030
G05     129.9          64.9               10.4 +/-    1.03      11.4 +/-    1.03  0.030 / 0.030
G06     54.3           16.1                6.3 +/-    1.11      15.2 +/-    1.11  0.040 / 0.040
G12     200.5          66.6               11.2 +/-    0.44      12.1 +/-    0.44  0.030 / 0.050
G25     290.8          56.0                6.1 +/-    2.30       7.2 +/-    2.30  0.030 / 0.040
G29     311.7          34.2                7.4 +/-    0.95      12.0 +/-    0.95  0.030 / 0.030