PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-09:12:50
G01     119.3          17.7                3.9 +/-    0.93       9.1 +/-    0.93  0.030 / 0.030
G07     81.5           66.0                5.3 +/-    0.46       5.8 +/-    0.46  0.030 / 0.040
G08     44.4           29.8                3.2 +/-    1.41       5.6 +/-    1.41  0.150 / 0.180
G09     173.6          21.7                5.1 +/-    2.08      10.9 +/-    2.08  0.140 / 0.180
G11     105.3          40.0                5.2 +/-    1.10       7.5 +/-    1.10  0.030 / 0.030
G13     317.6          19.6                2.1 +/-    1.53       4.7 +/-    1.53  0.030 / 0.030
G17     200.9          25.9                4.1 +/-    1.75       7.8 +/-    1.75  0.140 / 0.230
G18     92.9           20.7                4.7 +/-    1.76      10.2 +/-    1.76  0.210 / 0.340
G28     290.8          56.7                3.4 +/-    1.61       4.0 +/-    1.61  0.140 / 0.200
G30     342.8          67.3                3.5 +/-    0.89       3.8 +/-    0.89  0.120 / 0.210