PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-16:12:40
G02     231.0          69.0                8.0 +/-    0.89       8.5 +/-    0.89  0.140 / 0.430
G05     173.9          12.2                5.8 +/-   16.27      15.4 +/-   16.27  0.180 / 0.440
G06     42.3           59.9                8.1 +/-    0.50       9.2 +/-    0.50  0.070 / 0.110
G12     323.0          53.2                8.0 +/-    0.70       9.7 +/-    0.70  0.080 / 0.100
G17     68.6           23.1                7.2 +/-    1.86      14.8 +/-    1.86  0.030 / 0.040
G19     49.6           44.3                8.0 +/-    1.20      10.9 +/-    1.20  0.030 / 0.050
G24     247.3          36.9                8.0 +/-    1.48      12.2 +/-    1.48  0.030 / 0.030