PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-09:27:50
G01     64.0           31.0                4.2 +/-    1.22       7.2 +/-    1.22  0.030 / 0.040
G07     139.4          25.6                5.6 +/-    1.03      10.7 +/-    1.03  0.050 / 0.040
G11     51.3           29.7                4.2 +/-    1.00       7.4 +/-    1.00  0.050 / 0.110
G13     267.3          37.8                7.5 +/-    1.35      11.3 +/-    1.35  0.050 / 0.130
G15     298.4          15.9                2.5 +/-    3.52       6.1 +/-    3.52  0.060 / 0.140
G17     239.5          71.3                6.9 +/-    0.67       7.2 +/-    0.67  0.060 / 0.130
G18     45.0           15.6                3.5 +/-    1.67       8.6 +/-    1.67  0.180 / 0.490
G19     226.9          48.3                6.9 +/-    1.38       8.9 +/-    1.38  0.170 / 0.410
G28     12.9           60.8                3.6 +/-    0.54       4.1 +/-    0.54  0.060 / 0.110
G30     140.4          59.7                4.7 +/-    0.62       5.3 +/-    0.62  0.050 / 0.090