PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-18:42:50
G02     214.4          57.0               11.0 +/-    0.72      12.8 +/-    0.72  0.080 / 0.280
G06     66.0           76.6                8.3 +/-    0.43       8.5 +/-    0.43  0.080 / 0.300
G12     316.8          32.0                7.6 +/-    1.65      12.7 +/-    1.65  0.040 / 0.060
G17     53.7           35.4                8.6 +/-    1.40      13.6 +/-    1.40  0.050 / 0.060
G19     37.4           49.8                8.7 +/-    1.22      11.0 +/-    1.22  0.060 / 0.090
G24     268.7          41.8                9.7 +/-    2.49      13.7 +/-    2.49  0.070 / 0.080
G28     119.2          20.5                8.4 +/-    1.10      18.3 +/-    1.10  0.040 / 0.080