PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-17:57:20
G02     204.0          35.8               11.0 +/-    1.24      17.1 +/-    1.24  0.060 / 0.120
G06     156.4          70.8                9.1 +/-    0.30       9.6 +/-    0.30  0.060 / 0.110
G12     307.5          15.1                6.1 +/-    3.19      15.0 +/-    3.19  0.070 / 0.100
G17     35.7           49.4                8.1 +/-    1.36      10.3 +/-    1.36  0.060 / 0.110
G19     7.5            63.6                9.3 +/-    0.32      10.2 +/-    0.32  0.080 / 0.090
G24     295.6          38.7                7.6 +/-    1.25      11.2 +/-    1.25  0.080 / 0.100
G28     101.3          34.8                9.9 +/-    0.84      15.8 +/-    0.84  0.060 / 0.050