PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-17:58:10
G02     204.3          30.6               12.2 +/-    1.37      21.1 +/-    1.37  0.110 / 0.140
G03     59.3           9.8                 7.4 +/-    3.86      20.6 +/-    3.86  0.110 / 0.150
G06     158.6          69.3                9.7 +/-    0.49      10.3 +/-    0.49  0.130 / 0.290
G12     308.3          16.5               10.4 +/-    2.70      24.9 +/-    2.70  0.270 / 0.240
G17     38.6           47.1                8.9 +/-    1.51      11.6 +/-    1.51  0.150 / 0.300
G19     6.7            64.2                9.2 +/-    0.42      10.1 +/-    0.42  0.140 / 0.320
G28     102.8          31.0                9.3 +/-    0.64      15.9 +/-    0.64  0.050 / 0.050