PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-17:42:50
G02     201.0          23.4                9.8 +/-    1.38      19.8 +/-    1.38  0.070 / 0.120
G06     168.9          57.4               12.0 +/-    0.68      14.0 +/-    0.68  0.090 / 0.120
G13     223.6          11.0                9.8 +/-    1.10      26.8 +/-    1.10  0.040 / 0.090
G17     23.2           58.6                8.9 +/-    0.35      10.2 +/-    0.35  0.050 / 0.100
G19     337.4          70.2                8.7 +/-    0.55       9.2 +/-    0.55  0.100 / 0.200
G24     307.3          31.8                7.6 +/-    2.70      12.8 +/-    2.70  0.080 / 0.190
G28     87.9           42.3                9.7 +/-    0.70      13.7 +/-    0.70  0.030 / 0.030