PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/06-08:57:40
G01     66.7           31.6                5.2 +/-    1.04       8.8 +/-    1.04  0.030 / 0.040
G07     138.1          28.1                7.1 +/-    1.01      12.9 +/-    1.01  0.030 / 0.040
G11     52.9           31.7                4.4 +/-    0.68       7.4 +/-    0.68  0.060 / 0.110
G13     270.5          38.4                9.6 +/-    1.53      14.3 +/-    1.53  0.060 / 0.110
G15     300.4          15.7                2.3 +/-    2.55       5.6 +/-    2.55  0.060 / 0.100
G17     234.3          69.5                8.7 +/-    0.62       9.2 +/-    0.62  0.060 / 0.120
G18     46.8           17.0                2.6 +/-    1.14       6.0 +/-    1.14  0.120 / 0.250
G19     224.7          46.0                8.1 +/-    0.94      10.8 +/-    0.94  0.110 / 0.250
G28     7.8            61.1                3.9 +/-    0.65       4.4 +/-    0.65  0.050 / 0.090
G30     138.0          62.5                9.2 +/-    0.78      10.2 +/-    0.78  0.050 / 0.100