PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-16:27:40
G02     250.3          76.2              -18.0 +/-    0.47     -18.4 +/-    0.47  0.050 / 0.050
G05     170.9          18.6               12.3 +/-    2.39      28.1 +/-    2.39  0.040 / 0.050
G06     39.8           54.1                9.1 +/-    0.67      11.0 +/-    0.67  0.090 / 0.320
G12     321.1          54.8               10.3 +/-    1.55      12.3 +/-    1.55  0.100 / 0.440
G17     71.5           23.3                9.1 +/-    0.75      18.6 +/-    0.75  0.030 / 0.040
G19     61.2           34.9                9.0 +/-    0.62      14.3 +/-    0.62  0.030 / 0.040
G24     242.6          32.6               13.4 +/-    1.51      22.3 +/-    1.51  0.120 / 0.130
G25     316.8          14.2                7.8 +/-    2.56      19.8 +/-    2.56  0.120 / 0.140