PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-20:28:00
G02     327.4          80.0                7.3 +/-    0.42       7.4 +/-    0.42  0.170 / 0.180
G05     165.0          31.0               10.9 +/-    1.56      18.6 +/-    1.56  0.110 / 0.210
G06     40.4           43.4                7.0 +/-    1.12       9.7 +/-    1.12  0.030 / 0.030
G12     315.9          66.0                7.4 +/-    0.90       8.0 +/-    0.90  0.030 / 0.030
G17     82.6           14.4                8.5 +/-    2.89      21.5 +/-    2.89  0.180 / 0.190
G19     72.5           27.8                8.1 +/-    1.01      14.8 +/-    1.01  0.180 / 0.280
G24     230.7          24.6               10.5 +/-    2.16      20.6 +/-    2.16  0.030 / 0.040
G25     317.3          25.6                8.3 +/-    1.40      16.0 +/-    1.40  0.030 / 0.040