PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-23:28:00
G02     310.9          81.4                9.8 +/-    0.86       9.9 +/-    0.86  0.090 / 0.200
G05     166.1          27.7               15.7 +/-    0.63      28.9 +/-    0.63  0.100 / 0.170
G06     39.3           48.7               10.1 +/-    0.71      12.9 +/-    0.71  0.040 / 0.030
G12     318.5          61.4               11.4 +/-    1.22      12.8 +/-    1.22  0.040 / 0.030
G17     80.4           15.0               10.2 +/-    1.35      25.2 +/-    1.35  0.090 / 0.160
G19     68.7           30.7               11.6 +/-    0.86      20.1 +/-    0.86  0.100 / 0.160
G24     232.9          27.0               16.1 +/-    1.02      30.0 +/-    1.02  0.030 / 0.040
G25     317.5          23.1                7.7 +/-    2.51      15.7 +/-    2.51  0.030 / 0.050