PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-15:57:50
G02     231.9          69.4                8.3 +/-    0.86       8.8 +/-    0.86  0.120 / 0.220
G05     173.8          12.6               11.7 +/-    3.13      30.8 +/-    3.13  0.060 / 0.240
G06     42.1           59.3                8.7 +/-    0.36       9.9 +/-    0.36  0.100 / 0.130
G12     323.1          54.0                8.9 +/-    1.08      10.7 +/-    1.08  0.110 / 0.130
G17     69.1           22.5                7.6 +/-    1.10      15.7 +/-    1.10  0.040 / 0.050
G19     50.2           43.9                7.5 +/-    0.75      10.3 +/-    0.75  0.030 / 0.050
G24     246.6          36.6               10.5 +/-    1.22      16.2 +/-    1.22  0.040 / 0.050
G25     315.9          10.4               -9.4 +/-   34.72     -25.9 +/-   34.72  0.030 / 0.040