PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-19:27:40
G02     229.1          70.1               10.8 +/-    0.42      11.4 +/-    0.42  0.310 / 0.550
G05     173.6          11.4                5.1 +/-   27.69      13.8 +/-   27.69  0.280 / 0.490
G06     43.0           64.7               10.4 +/-    0.47      11.3 +/-    0.47  0.040 / 0.040
G12     320.3          44.0                9.1 +/-    0.35      12.5 +/-    0.35  0.030 / 0.030
G17     64.8           27.2                7.9 +/-    1.60      14.7 +/-    1.60  0.120 / 0.090
G19     51.6           41.3                8.9 +/-    1.37      12.6 +/-    1.37  0.060 / 0.080
G24     251.8          37.6               10.6 +/-    1.51      16.1 +/-    1.51  0.040 / 0.080
G28     127.9          10.5               10.5 +/-    3.04      28.9 +/-    3.04  0.050 / 0.100