PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-16:57:30
G02     312.2          80.1                8.1 +/-    0.46       8.2 +/-    0.46  0.130 / 0.210
G05     166.4          29.5               11.0 +/-    1.09      19.5 +/-    1.09  0.110 / 0.190
G06     40.6           42.7                7.3 +/-    0.70      10.2 +/-    0.70  0.030 / 0.050
G12     316.2          66.9                6.2 +/-    1.01       6.6 +/-    1.01  0.040 / 0.040
G17     81.0           16.8                7.8 +/-    1.20      18.6 +/-    1.20  0.100 / 0.130
G19     72.2           27.7                7.2 +/-    0.61      13.3 +/-    0.61  0.080 / 0.190
G24     232.0          25.1               10.4 +/-    1.73      20.3 +/-    1.73  0.030 / 0.040
G25     317.4          24.6                8.6 +/-    3.30      16.9 +/-    3.30  0.030 / 0.040