PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-15:42:40
G02     20.6           65.5                7.9 +/-    0.54       8.6 +/-    0.54  0.020 / 0.030
G05     158.6          48.8               10.9 +/-    1.26      14.0 +/-    1.26  0.030 / 0.030
G06     47.4           27.1                6.9 +/-    1.81      12.9 +/-    1.81  0.040 / 0.040
G12     238.5          78.5                7.8 +/-    0.66       7.9 +/-    0.66  0.030 / 0.050
G19     91.2           15.5                8.5 +/-    2.03      20.8 +/-    2.03  0.050 / 0.060
G20     197.8          14.6               10.0 +/-    3.56      25.2 +/-    3.56  0.050 / 0.070
G24     217.6          11.5               10.2 +/-    2.85      27.5 +/-    2.85  0.180 / 0.500
G25     309.0          46.5               10.6 +/-    2.14      14.0 +/-    2.14  0.130 / 0.520
G29     301.0          23.7                8.2 +/-    1.32      16.4 +/-    1.32  0.030 / 0.040