PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-07:27:20
G02     199.5          21.3                6.4 +/-    1.89      13.6 +/-    1.89  0.130 / 0.270
G06     169.3          53.5               10.4 +/-    0.63      12.5 +/-    0.63  0.120 / 0.230
G13     226.1          13.9                7.1 +/-    1.51      18.0 +/-    1.51  0.060 / 0.080
G17     21.7           60.1                7.0 +/-    0.91       7.9 +/-    0.91  0.060 / 0.080
G19     327.8          71.7                6.4 +/-    0.61       6.7 +/-    0.61  0.040 / 0.040
G24     310.8          27.8                3.5 +/-    1.24       6.5 +/-    1.24  0.060 / 0.050
G28     80.4           47.0                8.2 +/-    1.18      10.7 +/-    1.18  0.220 / 0.280
G30     158.3          18.3                6.8 +/-    2.12      15.7 +/-    2.12  0.170 / 0.330