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               14.4 +/-    1.40      23.2 +/-    1.40  0.120 / 0.170
G03     57.5           9.8                10.3 +/-    1.05      28.9 +/-    1.05  0.110 / 0.170
G06     157.2          70.9               11.2 +/-    0.56      11.8 +/-    0.56  0.130 / 0.280
G12     309.0          17.1                9.5 +/-    3.16      22.4 +/-    3.16  0.110 / 0.300
G17     40.3           45.6                9.7 +/-    0.81      12.9 +/-    0.81  0.070 / 0.090
G19     10.2           63.0               10.8 +/-    0.71      12.0 +/-    0.71  0.100 / 0.080
G24     297.8          37.9                8.8 +/-    1.70      13.2 +/-    1.70  0.030 / 0.060
G28     104.8          29.6               10.0 +/-    1.11      17.7 +/-    1.11  0.050 / 0.050