PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-14:57:20
G02     205.8          40.1               10.9 +/-    0.97      15.8 +/-    0.97  0.090 / 0.190
G03     53.0           9.4                 9.2 +/-    2.58      26.0 +/-    2.58  0.180 / 0.220
G06     148.1          75.3               10.6 +/-    0.63      11.0 +/-    0.63  0.150 / 0.190
G12     311.3          20.5                7.7 +/-    0.84      16.8 +/-    0.84  0.110 / 0.200
G17     44.4           42.1                8.1 +/-    2.16      11.3 +/-    2.16  0.030 / 0.060
G19     18.4           59.8                8.4 +/-    1.02       9.5 +/-    1.02  0.030 / 0.040
G24     292.1          39.9               10.8 +/-    4.99      15.8 +/-    4.99  0.040 / 0.020
G28     109.2          26.1                8.6 +/-    0.80      16.5 +/-    0.80  0.030 / 0.020