PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-09:12:50
G07     24.8           68.5                4.9 +/-    0.48       5.3 +/-    0.48  0.030 / 0.030
G08     66.6           50.7                4.5 +/-    1.26       5.6 +/-    1.26  0.030 / 0.030
G09     179.2          49.2                6.5 +/-    0.55       8.3 +/-    0.55  0.230 / 0.290
G11     130.7          28.7                5.9 +/-    1.08      10.6 +/-    1.08  0.130 / 0.200
G18     113.3          10.5                1.5 +/-   15.36       4.1 +/-   15.36  0.040 / 0.050
G23     159.3          17.0                4.2 +/-    0.93      10.1 +/-    0.93  0.040 / 0.050
G27     40.5           17.2                3.2 +/-    2.57       7.5 +/-    2.57  0.180 / 0.360
G28     254.8          39.7                5.7 +/-    2.00       8.4 +/-    2.00  0.150 / 0.410
G30     319.8          50.6                3.5 +/-    0.96       4.4 +/-    0.96  0.040 / 0.040