PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-03:12:20
G02     45.3           44.2                7.0 +/-    1.13       9.5 +/-    1.13  0.040 / 0.040
G05     100.9          68.9                8.4 +/-    0.66       8.9 +/-    0.66  0.030 / 0.050
G12     192.2          55.2                9.9 +/-    0.25      11.7 +/-    0.25  0.030 / 0.030
G25     269.7          59.0                3.8 +/-    1.24       4.4 +/-    1.24  0.030 / 0.030
G29     319.5          42.8                6.3 +/-    0.62       8.8 +/-    0.62  0.040 / 0.050