PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-19:57:50
G01     47.3           23.3               10.2 +/-    1.74      20.7 +/-    1.74  0.060 / 0.070
G06     178.1          26.0               16.0 +/-    2.28      30.5 +/-    2.28  0.060 / 0.080
G11     43.7           12.1               10.0 +/-    2.36      26.5 +/-    2.36  0.190 / 0.300
G13     246.5          29.3               13.8 +/-    1.71      24.6 +/-    1.71  0.300 / 0.420
G15     280.0          15.3               11.6 +/-    1.72      28.6 +/-    1.72  0.050 / 0.040
G17     328.6          77.8               13.6 +/-    0.42      13.9 +/-    0.42  0.040 / 0.050
G19     251.1          62.8               14.2 +/-    0.96      15.7 +/-    0.96  0.100 / 0.180
G24     318.6          10.9               -9.5 +/-   34.32     -25.9 +/-   34.32  0.080 / 0.180
G28     50.3           54.8               13.1 +/-    1.48      15.7 +/-    1.48  0.110 / 0.110
G30     150.4          36.2               13.8 +/-    0.89      21.5 +/-    0.89  0.130 / 0.170