PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-14:43:00
G02     204.1          35.1               12.0 +/-    1.20      19.0 +/-    1.20  0.110 / 0.300
G03     57.4           9.7                 8.0 +/-    1.48      22.6 +/-    1.48  0.090 / 0.250
G06     159.2          70.5                9.3 +/-    0.32       9.8 +/-    0.32  0.200 / 0.240
G12     308.8          16.6                7.0 +/-    2.25      16.8 +/-    2.25  0.140 / 0.180
G17     40.2           45.7                6.6 +/-    0.96       8.8 +/-    0.96  0.040 / 0.030
G19     10.0           63.0                7.6 +/-    0.69       8.4 +/-    0.69  0.060 / 0.040
G24     297.8          37.9                7.0 +/-    1.73      10.5 +/-    1.73  0.060 / 0.130
G28     104.8          29.5                6.7 +/-    1.17      11.9 +/-    1.17  0.080 / 0.120