PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-15:42:50
G02     204.1          33.8               16.3 +/-    1.65      26.4 +/-    1.65  0.110 / 0.240
G06     158.8          70.2               14.2 +/-    0.88      15.0 +/-    0.88  0.110 / 0.190
G12     308.6          16.5               12.6 +/-    2.59      30.1 +/-    2.59  0.060 / 0.110
G17     39.8           46.1               11.0 +/-    0.76      14.6 +/-    0.76  0.060 / 0.100
G19     9.0            63.4               12.4 +/-    0.26      13.7 +/-    0.26  0.030 / 0.070
G24     298.5          37.6               13.6 +/-    1.84      20.6 +/-    1.84  0.040 / 0.060
G28     104.2          30.0               11.4 +/-    1.36      20.1 +/-    1.36  0.030 / 0.040