PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-18:42:40
G02     315.1          80.4                5.6 +/-    0.41       5.7 +/-    0.41  0.160 / 0.250
G05     166.0          29.4                8.5 +/-    0.71      15.0 +/-    0.71  0.150 / 0.180
G06     40.3           43.8                5.3 +/-    1.05       7.2 +/-    1.05  0.160 / 0.190
G12     316.9          65.4                5.4 +/-    1.00       5.9 +/-    1.00  0.130 / 0.210
G17     81.1           16.1                7.5 +/-    1.39      18.3 +/-    1.39  0.030 / 0.040
G19     71.5           28.3                5.9 +/-    1.25      10.7 +/-    1.25  0.030 / 0.040
G24     232.1          25.5                8.5 +/-    1.90      16.4 +/-    1.90  0.090 / 0.170
G25     317.4          24.2                4.7 +/-    1.51       9.4 +/-    1.51  0.080 / 0.220