PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-15:13:00
G02     202.9          26.9                9.8 +/-    1.23      18.4 +/-    1.23  0.060 / 0.110
G06     160.5          65.5               10.8 +/-    0.63      11.7 +/-    0.63  0.060 / 0.100
G12     306.2          15.8                6.3 +/-    1.54      15.3 +/-    1.54  0.110 / 0.400
G17     32.9           51.6                8.0 +/-    0.66       9.9 +/-    0.66  0.100 / 0.350
G19     338.8          68.6                9.6 +/-    0.66      10.3 +/-    0.66  0.030 / 0.040
G24     301.5          36.8                7.7 +/-    1.50      11.9 +/-    1.50  0.030 / 0.040
G28     97.4           34.5                8.4 +/-    0.62      13.4 +/-    0.62  0.030 / 0.040