PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/24-11:58:00
G01     123.0          14.7                5.5 +/-    2.23      13.7 +/-    2.23  0.030 / 0.030
G07     72.5           66.4                3.1 +/-    0.86       3.4 +/-    0.86  0.030 / 0.040
G08     46.7           33.8                3.5 +/-    1.15       5.6 +/-    1.15  0.090 / 0.330
G09     175.4          28.5                5.4 +/-    1.77       9.7 +/-    1.77  0.090 / 0.390
G11     110.2          36.5                4.9 +/-    1.01       7.6 +/-    1.01  0.030 / 0.050
G13     320.6          13.5                2.6 +/-    1.54       6.8 +/-    1.54  0.030 / 0.050
G17     199.9          21.9                6.5 +/-    2.33      13.6 +/-    2.33  0.170 / 0.230
G28     284.6          55.3                3.1 +/-    1.63       3.6 +/-    1.63  0.130 / 0.220
G30     336.4          62.7                3.1 +/-    0.56       3.4 +/-    0.56  0.070 / 0.160