PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-10:27:50
G01     64.8           31.3                5.2 +/-    1.20       8.8 +/-    1.20  0.070 / 0.140
G07     139.1          25.8                5.3 +/-    1.53      10.2 +/-    1.53  0.080 / 0.120
G11     51.5           29.8                5.1 +/-    1.09       9.0 +/-    1.09  0.030 / 0.040
G13     268.1          37.9                5.6 +/-    2.94       8.4 +/-    2.94  0.030 / 0.030
G15     299.7          15.5                2.4 +/-    1.02       5.8 +/-    1.02  0.100 / 0.110
G17     237.6          70.1                6.7 +/-    0.47       7.1 +/-    0.47  0.130 / 0.120
G18     45.4           15.9                4.6 +/-    2.03      11.1 +/-    2.03  0.280 / 0.360
G19     226.3          47.6                5.4 +/-    2.00       7.1 +/-    2.00  0.160 / 0.280
G28     12.2           60.8                5.6 +/-    2.00       6.4 +/-    2.00  0.050 / 0.050
G30     139.7          59.7                6.4 +/-    0.38       7.3 +/-    0.38  0.060 / 0.050