PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-09:12:40
G01     126.2          10.9                0.4 +/-   19.44       1.1 +/-   19.44  0.030 / 0.030
G07     56.6           68.6                4.8 +/-    0.80       5.1 +/-    0.80  0.030 / 0.030
G08     53.2           43.3                3.0 +/-    1.22       4.2 +/-    1.22  0.110 / 0.240
G09     177.7          37.0                6.0 +/-    1.00       9.3 +/-    1.00  0.130 / 0.350
G11     120.5          35.7                5.5 +/-    0.89       8.7 +/-    0.89  0.050 / 0.080
G13     320.8          12.2               -0.2 +/-    7.51      -0.5 +/-    7.51  0.090 / 0.080
G17     200.2          11.3               -4.8 +/-   13.49     -12.9 +/-   13.49  0.120 / 0.310
G18     103.7          16.3                4.4 +/-    2.98      10.7 +/-    2.98  0.140 / 0.280
G28     267.9          46.8                3.4 +/-    3.89       4.5 +/-    3.89  0.040 / 0.050
G30     330.4          59.3                2.8 +/-    0.49       3.2 +/-    0.49  0.050 / 0.030