PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-18:57:40
G02     213.9          56.5               11.9 +/-    0.81      14.0 +/-    0.81  0.070 / 0.240
G06     68.7           77.2               10.5 +/-    0.30      10.7 +/-    0.30  0.090 / 0.240
G12     316.5          31.3                9.7 +/-    1.50      16.5 +/-    1.50  0.040 / 0.060
G17     53.3           35.7                9.5 +/-    1.63      14.9 +/-    1.63  0.050 / 0.060
G19     36.6           50.3                9.7 +/-    1.20      12.2 +/-    1.20  0.100 / 0.070
G24     269.5          41.9               10.9 +/-    2.38      15.4 +/-    2.38  0.060 / 0.070
G28     118.7          20.9                9.8 +/-    1.10      21.0 +/-    1.10  0.040 / 0.090