PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-16:58:00
G02     323.5          79.5                8.1 +/-    0.42       8.2 +/-    0.42  0.070 / 0.080
G05     165.4          32.5                9.9 +/-    2.63      16.5 +/-    2.63  0.040 / 0.070
G06     42.1           38.3                7.9 +/-    1.31      11.8 +/-    1.31  0.170 / 0.170
G12     309.2          76.4                7.6 +/-    0.66       7.8 +/-    0.66  0.170 / 0.270
G17     86.4           10.0               10.5 +/-    1.29      29.3 +/-    1.29  0.030 / 0.020
G19     72.3           30.7                9.0 +/-    1.55      15.5 +/-    1.55  0.020 / 0.020
G24     226.8          22.5               10.3 +/-    2.21      21.3 +/-    2.21  0.110 / 0.130
G25     317.2          29.4                9.5 +/-    2.14      16.8 +/-    2.14  0.090 / 0.120