PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-16:12:30
G02     204.4          34.1               13.5 +/-    0.97      21.7 +/-    0.97  0.090 / 0.200
G06     157.2          70.9               10.7 +/-    1.36      11.3 +/-    1.36  0.080 / 0.140
G12     309.0          17.1                8.9 +/-    2.06      21.0 +/-    2.06  0.060 / 0.090
G17     40.3           45.6                8.1 +/-    0.68      10.9 +/-    0.68  0.050 / 0.080
G19     10.2           63.0                9.2 +/-    0.62      10.2 +/-    0.62  0.040 / 0.070
G24     297.8          37.9                9.8 +/-    1.20      14.7 +/-    1.20  0.030 / 0.060
G28     104.8          29.6               10.1 +/-    1.32      17.8 +/-    1.32  0.040 / 0.040