PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-05:27:50
G02     244.8          78.3                6.0 +/-    0.44       6.1 +/-    0.44  0.130 / 0.240
G05     170.9          17.0                5.3 +/-    1.36      12.5 +/-    1.36  0.120 / 0.210
G06     40.2           60.8                6.5 +/-    0.93       7.3 +/-    0.93  0.070 / 0.080
G12     321.2          50.7                4.9 +/-    0.57       6.1 +/-    0.57  0.060 / 0.100
G17     70.6           23.4                4.9 +/-    2.37      10.0 +/-    2.37  0.040 / 0.040
G19     57.8           38.2                5.7 +/-    1.30       8.5 +/-    1.30  0.030 / 0.030
G24     246.0          34.8                7.1 +/-    2.42      11.4 +/-    2.42  0.040 / 0.050
G25     316.7          11.8               -3.2 +/-   24.55      -8.6 +/-   24.55  0.040 / 0.040