PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-01:12:00
G02     42.5           47.2                9.7 +/-    0.75      12.7 +/-    0.75  0.030 / 0.040
G05     111.0          68.3               12.7 +/-    0.76      13.6 +/-    0.76  0.030 / 0.040
G12     190.1          56.0               13.9 +/-    0.54      16.3 +/-    0.54  0.030 / 0.030
G25     279.9          57.5               17.8 +/-    2.07      20.7 +/-    2.07  0.030 / 0.030
G29     313.8          34.9               10.1 +/-    0.95      16.1 +/-    0.95  0.040 / 0.050