PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-15:27:30
G02     202.0          25.1               14.3 +/-    1.39      27.8 +/-    1.39  0.160 / 0.420
G06     167.9          60.9               12.6 +/-    0.96      14.2 +/-    0.96  0.230 / 0.320
G17     32.0           52.6                9.2 +/-    0.61      11.3 +/-    0.61  0.080 / 0.110
G19     349.9          68.5                9.0 +/-    0.50       9.6 +/-    0.50  0.080 / 0.120
G24     306.6          32.7                8.0 +/-    1.83      13.3 +/-    1.83  0.030 / 0.040
G28     95.6           35.5                9.5 +/-    0.61      14.9 +/-    0.61  0.030 / 0.050
G30     158.2          10.1               14.4 +/-    3.46      40.2 +/-    3.46  0.090 / 0.160