PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-15:28:10
G02     203.3          31.2               10.2 +/-    0.85      17.3 +/-    0.85  0.050 / 0.090
G06     162.6          67.4               10.9 +/-    0.86      11.7 +/-    0.86  0.050 / 0.100
G12     307.2          14.4                6.0 +/-    2.04      15.2 +/-    2.04  0.110 / 0.260
G17     37.5           48.0                8.6 +/-    0.57      11.1 +/-    0.57  0.120 / 0.270
G19     3.8            65.1                8.9 +/-    0.56       9.7 +/-    0.56  0.040 / 0.050
G24     301.2          36.2                8.9 +/-    1.77      13.8 +/-    1.77  0.040 / 0.060
G28     101.7          31.7                9.6 +/-    0.53      16.2 +/-    0.53  0.090 / 0.130