PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-17:12:40
G02     230.1          69.0                7.6 +/-    0.72       8.0 +/-    0.72  0.120 / 0.310
G05     173.9          11.9                7.5 +/-   18.59      20.1 +/-   18.59  0.080 / 0.270
G06     42.6           60.8                7.8 +/-    0.64       8.8 +/-    0.64  0.090 / 0.090
G12     322.7          51.9                6.6 +/-    1.31       8.2 +/-    1.31  0.080 / 0.100
G17     67.7           24.1                7.6 +/-    1.51      15.1 +/-    1.51  0.030 / 0.060
G19     49.2           44.4                6.9 +/-    0.33       9.4 +/-    0.33  0.050 / 0.060
G24     248.3          37.2               10.9 +/-    1.82      16.6 +/-    1.82  0.040 / 0.060