PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-11:12:50
G01     45.6           21.7                4.1 +/-    3.01       8.7 +/-    3.01  0.130 / 0.000
G06     175.5          29.8                4.2 +/-    1.39       7.4 +/-    1.39  0.040 / 0.020
G11     44.0           13.1                2.6 +/-    2.22       6.7 +/-    2.22  0.030 / 0.020
G13     244.7          28.7                5.5 +/-    2.00       9.9 +/-    2.00  0.040 / 0.040
G15     280.1          14.6                2.1 +/-    1.13       5.2 +/-    1.13  0.050 / 0.040
G17     323.3          77.5                5.8 +/-    0.41       5.9 +/-    0.41  0.090 / 0.110
G19     255.1          65.3                6.6 +/-    0.32       7.1 +/-    0.32  0.080 / 0.120
G24     318.8          10.3              -17.2 +/-    9.68     -47.5 +/-    9.68  0.040 / 0.060
G28     49.1           55.8                5.4 +/-    0.66       6.4 +/-    0.66  0.040 / 0.060
G30     152.1          38.5                6.2 +/-    0.91       9.2 +/-    0.91  0.100 / 0.190