PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-00:57:50
G10     244.3          22.6               14.3 +/-    2.82      29.5 +/-    2.82  0.140 / 0.200
G13     60.6           32.5                9.4 +/-    0.66      15.6 +/-    0.66  0.170 / 0.250
G15     100.5          57.3               11.8 +/-    0.90      13.7 +/-    0.90  0.180 / 0.500
G16     304.5          14.7                7.2 +/-    2.31      17.9 +/-    2.31  0.130 / 0.420
G20     260.5          45.5               10.9 +/-    1.08      14.5 +/-    1.08  0.050 / 0.130
G26     276.4          17.9                9.8 +/-    1.39      22.8 +/-    1.39  0.060 / 0.120
G29     159.8          57.2               11.8 +/-    0.77      13.8 +/-    0.77  0.040 / 0.040