PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-16:42:40
G02     315.6          80.9               12.1 +/-    0.72      12.2 +/-    0.72  0.040 / 0.040
G05     170.0          26.7               11.7 +/-    0.74      22.0 +/-    0.74  0.030 / 0.040
G06     40.8           44.6                8.5 +/-    0.76      11.5 +/-    0.76  0.070 / 0.170
G12     315.9          67.3                9.0 +/-    0.96       9.7 +/-    0.96  0.100 / 0.160
G17     84.6           11.2               11.1 +/-    2.62      30.2 +/-    2.62  0.040 / 0.050
G19     73.1           27.8                9.8 +/-    0.37      18.0 +/-    0.37  0.030 / 0.060
G24     233.0          25.8               14.7 +/-    1.50      28.2 +/-    1.50  0.050 / 0.110
G25     317.5          28.7                9.4 +/-    1.29      17.0 +/-    1.29  0.040 / 0.100