PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-14:42:40
G02     201.8          25.6               11.0 +/-    0.60      21.1 +/-    0.60  0.080 / 0.120
G06     168.4          60.6                7.6 +/-    0.97       8.5 +/-    0.97  0.080 / 0.140
G17     32.0           52.6                5.7 +/-    0.58       7.0 +/-    0.58  0.150 / 0.340
G19     349.7          68.5                4.9 +/-    0.61       5.2 +/-    0.61  0.180 / 0.250
G24     306.6          32.7                6.3 +/-    2.13      10.4 +/-    2.13  0.030 / 0.040
G28     95.6           35.4                5.9 +/-    0.78       9.2 +/-    0.78  0.030 / 0.030
G30     158.1          9.9                 9.7 +/-    2.76      27.2 +/-    2.76  0.030 / 0.080