PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-20:12:30
G02     221.3          65.1               13.0 +/-    1.04      14.2 +/-    1.04  0.140 / 0.310
G06     48.8           70.8               11.2 +/-    0.35      11.7 +/-    0.35  0.150 / 0.330
G12     319.0          38.4                9.1 +/-    1.58      13.5 +/-    1.58  0.040 / 0.050
G17     60.5           30.1               12.6 +/-    1.37      22.0 +/-    1.37  0.040 / 0.040
G19     45.5           45.0               11.2 +/-    0.86      15.1 +/-    0.86  0.100 / 0.100
G24     258.4          40.0               13.1 +/-    3.56      19.0 +/-    3.56  0.070 / 0.100
G28     124.4          14.6               11.0 +/-    2.42      27.5 +/-    2.42  0.060 / 0.080