PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-12:27:50
G01     109.9          23.9                6.1 +/-    2.29      12.2 +/-    2.29  0.030 / 0.030
G07     102.1          60.3                6.1 +/-    1.40       6.9 +/-    1.40  0.030 / 0.020
G08     42.0           21.3                5.4 +/-    3.01      11.5 +/-    3.01  0.030 / 0.030
G09     173.9          14.4                2.4 +/-    2.10       6.0 +/-    2.10  0.040 / 0.040
G11     91.6           42.3                6.0 +/-    0.91       8.4 +/-    0.91  0.100 / 0.180
G13     311.7          27.0                4.1 +/-    2.00       7.6 +/-    2.00  0.060 / 0.160
G17     204.2          35.9                6.2 +/-    1.61       9.6 +/-    1.61  0.080 / 0.110
G18     83.0           23.6                3.3 +/-    2.30       6.7 +/-    2.30  0.080 / 0.140
G28     311.5          60.3                5.1 +/-    1.08       5.7 +/-    1.08  0.110 / 0.140
G30     5.5            75.7                5.2 +/-    0.44       5.3 +/-    0.44  0.090 / 0.130