PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-16:58:00
G02     89.6           10.2                9.5 +/-    2.41      26.5 +/-    2.41  0.130 / 0.230
G05     45.6           28.6                6.7 +/-    0.92      12.1 +/-    0.92  0.090 / 0.220
G13     87.6           35.5               12.1 +/-    1.14      19.0 +/-    1.14  0.050 / 0.090
G15     141.4          44.3               14.5 +/-    0.79      19.7 +/-    0.79  0.040 / 0.080
G20     240.3          29.6               10.2 +/-    1.42      18.0 +/-    1.42  0.050 / 0.130
G21     305.4          41.8                9.8 +/-    1.17      13.9 +/-    1.17  0.050 / 0.120
G25     201.2          16.8               14.0 +/-    1.12      33.3 +/-    1.12  0.040 / 0.090
G26     297.7          19.8                9.6 +/-    2.00      21.3 +/-    2.00  0.060 / 0.100
G29     137.4          82.9               12.0 +/-    1.00      12.1 +/-    1.00  0.040 / 0.070