PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-10:57:40
G01     68.6           32.0                4.0 +/-    0.41       6.7 +/-    0.41  0.050 / 0.100
G07     137.4          28.4                5.0 +/-    1.37       9.1 +/-    1.37  0.070 / 0.100
G11     53.4           31.9                3.4 +/-    0.71       5.8 +/-    0.71  0.040 / 0.060
G13     272.3          38.5                5.9 +/-    0.82       8.9 +/-    0.82  0.030 / 0.050
G15     303.0          14.7               -0.8 +/-    1.50      -2.0 +/-    1.50  0.030 / 0.040
G17     231.5          66.8                5.6 +/-    0.50       6.1 +/-    0.50  0.030 / 0.040
G18     47.8           17.6                1.8 +/-    0.65       4.2 +/-    0.65  0.050 / 0.080
G19     223.7          44.5                7.2 +/-    1.38       9.8 +/-    1.38  0.040 / 0.070
G28     6.5            61.1                2.9 +/-    0.47       3.3 +/-    0.47  0.060 / 0.100
G30     136.5          62.5                6.3 +/-    1.00       7.0 +/-    1.00  0.060 / 0.120