PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-19:28:00
G02     52.1           39.8                8.3 +/-    0.98      12.1 +/-    0.98  0.030 / 0.030
G05     72.7           67.0               10.9 +/-    0.58      11.7 +/-    0.58  0.030 / 0.030
G12     182.4          36.7               12.2 +/-    1.18      18.8 +/-    1.18  0.370 / 0.460
G13     133.3          10.4                5.2 +/-   28.77      14.4 +/-   28.77  0.190 / 0.440
G21     265.2          11.8               11.9 +/-    4.28      31.8 +/-    4.28  0.040 / 0.050
G25     247.1          56.2               10.6 +/-    1.14      12.5 +/-    1.14  0.050 / 0.050
G29     322.7          46.5                9.4 +/-    1.16      12.5 +/-    1.16  0.080 / 0.070