PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-15:57:40
G02     234.2          70.8                7.5 +/-    1.41       7.9 +/-    1.41  0.050 / 0.080
G05     173.4          13.1                9.0 +/-    2.96      23.4 +/-    2.96  0.040 / 0.070
G06     41.3           60.3                7.9 +/-    0.60       9.0 +/-    0.60  0.040 / 0.050
G12     321.0          48.7                7.3 +/-    1.50       9.4 +/-    1.50  0.050 / 0.050
G17     66.4           26.8                6.8 +/-    1.44      12.8 +/-    1.44  0.070 / 0.110
G19     55.2           38.8                7.6 +/-    0.30      11.2 +/-    0.30  0.090 / 0.110
G24     249.2          36.0                9.8 +/-    1.00      15.3 +/-    1.00  0.040 / 0.040