PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-14:13:00
G01     122.8          14.8               10.0 +/-    1.91      25.0 +/-    1.91  0.070 / 0.100
G07     74.2           65.7                8.0 +/-    0.68       8.7 +/-    0.68  0.090 / 0.100
G08     46.7           33.8                6.8 +/-    1.56      11.0 +/-    1.56  0.110 / 0.430
G09     176.4          29.8                9.4 +/-    1.65      16.5 +/-    1.65  0.090 / 0.330
G11     109.4          36.4                9.2 +/-    1.14      14.2 +/-    1.14  0.030 / 0.020
G13     320.5          13.8                5.0 +/-    3.50      12.8 +/-    3.50  0.030 / 0.030
G17     199.9          21.9                8.9 +/-    1.75      18.6 +/-    1.75  0.030 / 0.030
G28     284.4          55.1                7.3 +/-    2.06       8.7 +/-    2.06  0.030 / 0.030
G30     335.7          62.3                7.0 +/-    0.76       7.8 +/-    0.76  0.220 / 0.260