PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-14:58:00
G02     358.0          75.9                9.8 +/-    0.64      10.1 +/-    0.64  0.030 / 0.040
G05     165.4          35.7               13.3 +/-    1.44      20.9 +/-    1.44  0.030 / 0.040
G06     42.4           38.4                6.2 +/-    0.55       9.3 +/-    0.55  0.030 / 0.080
G12     302.9          74.2                8.8 +/-    0.48       9.1 +/-    0.48  0.030 / 0.090
G19     80.2           23.2                9.0 +/-    1.03      18.4 +/-    1.03  0.080 / 0.120
G24     226.6          20.2               11.0 +/-    1.90      24.1 +/-    1.90  0.070 / 0.130
G25     316.1          34.9                8.1 +/-    1.21      12.8 +/-    1.21  0.090 / 0.180
G29     291.5          15.5                6.1 +/-    1.50      15.0 +/-    1.50  0.100 / 0.220