PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/02-13:43:00
G01     91.1           31.6                7.2 +/-    0.78      12.2 +/-    0.78  0.040 / 0.030
G07     124.8          46.1                7.7 +/-    2.27      10.3 +/-    2.27  0.020 / 0.030
G11     68.6           39.5                5.4 +/-    0.47       7.9 +/-    0.47  0.120 / 0.120
G13     295.2          36.0                6.3 +/-    1.74       9.9 +/-    1.74  0.120 / 0.110
G17     213.7          53.6                7.6 +/-    0.87       9.2 +/-    0.87  0.040 / 0.090
G18     64.1           23.8                6.0 +/-    1.18      12.0 +/-    1.18  0.040 / 0.080
G19     214.5          23.3                7.9 +/-    1.92      16.1 +/-    1.92  0.040 / 0.060
G28     347.2          61.8                4.7 +/-    0.52       5.3 +/-    0.52  0.040 / 0.050
G30     98.1           77.8                7.1 +/-    0.81       7.2 +/-    0.81  0.040 / 0.060