PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/01-18:12:40
G02     245.4          75.4                8.8 +/-    0.58       9.0 +/-    0.58  0.060 / 0.170
G05     171.2          17.9               11.1 +/-    1.38      25.7 +/-    1.38  0.070 / 0.200
G06     40.6           54.2                9.2 +/-    0.39      11.0 +/-    0.39  0.030 / 0.050
G12     322.6          58.3                8.3 +/-    0.68       9.6 +/-    0.68  0.040 / 0.050
G17     73.0           20.5                9.5 +/-    1.08      20.7 +/-    1.08  0.090 / 0.440
G19     56.8           40.0                9.9 +/-    0.68      14.4 +/-    0.68  0.130 / 0.340
G24     241.2          33.4               11.0 +/-    1.15      18.1 +/-    1.15  0.040 / 0.040
G25     317.0          14.6                8.4 +/-    2.60      21.0 +/-    2.60  0.040 / 0.040