PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-14:42:50
G02     200.9          20.1               17.6 +/-    2.95      38.8 +/-    2.95  0.130 / 0.280
G06     171.2          54.5               15.9 +/-    0.36      19.0 +/-    0.36  0.160 / 0.340
G13     228.4          12.7               14.7 +/-    2.40      38.7 +/-    2.40  0.210 / 0.300
G17     26.5           57.0               13.5 +/-    1.17      15.7 +/-    1.17  0.190 / 0.410
G19     333.5          70.9               14.2 +/-    0.16      14.9 +/-    0.16  0.070 / 0.110
G24     310.6          28.9               11.8 +/-    1.02      21.2 +/-    1.02  0.090 / 0.110
G28     89.6           38.8               12.5 +/-    1.12      18.5 +/-    1.12  0.030 / 0.030
G30     157.7          15.1               16.2 +/-    2.83      40.1 +/-    2.83  0.060 / 0.040