PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-13:58:10
G02     205.3          39.9               11.7 +/-    0.97      17.1 +/-    0.97  0.070 / 0.210
G03     53.6           9.4                 9.3 +/-    1.49      26.3 +/-    1.49  0.160 / 0.210
G06     152.3          74.3               11.3 +/-    0.42      11.7 +/-    0.42  0.110 / 0.080
G12     310.8          19.5                7.8 +/-    1.58      17.3 +/-    1.58  0.080 / 0.080
G17     43.7           42.8                8.8 +/-    1.82      12.2 +/-    1.82  0.100 / 0.190
G19     17.0           60.3                8.7 +/-    0.78       9.8 +/-    0.78  0.090 / 0.180
G24     293.0          39.6               10.4 +/-    4.88      15.3 +/-    4.88  0.030 / 0.050
G28     108.6          26.6                9.2 +/-    0.78      17.3 +/-    0.78  0.030 / 0.050