PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-17:27:50
G02     244.8          74.9                8.6 +/-    0.83       8.9 +/-    0.83  0.060 / 0.150
G05     171.3          17.7                9.8 +/-    1.12      22.9 +/-    1.12  0.070 / 0.160
G06     40.6           54.0                7.5 +/-    0.51       9.1 +/-    0.51  0.090 / 0.110
G12     322.8          58.9                7.0 +/-    1.21       8.1 +/-    1.21  0.090 / 0.110
G17     73.3           20.0                8.1 +/-    1.12      17.8 +/-    1.12  0.030 / 0.040
G19     56.5           40.2                8.4 +/-    0.84      12.2 +/-    0.84  0.020 / 0.050
G24     241.0          33.4               11.4 +/-    1.65      18.7 +/-    1.65  0.030 / 0.040
G25     317.0          14.8                6.0 +/-    2.18      15.0 +/-    2.18  0.030 / 0.040