PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-01:42:50
G02     205.2          42.4                7.7 +/-    1.35      10.8 +/-    1.35  0.060 / 0.070
G06     162.8          72.6                5.8 +/-    0.67       6.1 +/-    0.67  0.050 / 0.070
G12     309.9          18.2                5.0 +/-    2.87      11.5 +/-    2.87  0.090 / 0.140
G17     43.3           42.7                3.4 +/-    2.15       4.7 +/-    2.15  0.160 / 0.130
G19     13.1           61.4                4.3 +/-    0.68       4.9 +/-    0.68  0.100 / 0.130
G24     287.5          42.0                1.6 +/-    2.14       2.2 +/-    2.14  0.090 / 0.130
G28     106.9          29.9                6.7 +/-    1.09      11.8 +/-    1.09  0.040 / 0.030