PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-09:27:50
G07     23.4           68.4                5.1 +/-    0.80       5.4 +/-    0.80  0.030 / 0.040
G08     67.8           51.2                5.7 +/-    0.41       7.1 +/-    0.41  0.030 / 0.040
G09     179.4          50.0                8.6 +/-    1.66      10.9 +/-    1.66  0.090 / 0.150
G11     131.1          28.3                6.8 +/-    0.73      12.4 +/-    0.73  0.110 / 0.160
G18     113.8          10.2               -9.4 +/-   19.93     -26.1 +/-   19.93  0.060 / 0.110
G23     159.1          17.4                4.8 +/-    3.74      11.2 +/-    3.74  0.050 / 0.110
G27     40.7           17.7                2.3 +/-    1.26       5.4 +/-    1.26  0.160 / 0.350
G28     254.2          39.4                7.4 +/-    1.30      10.9 +/-    1.30  0.100 / 0.200
G30     319.4          50.3                6.6 +/-    1.19       8.3 +/-    1.19  0.060 / 0.210