PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-01:27:50
G08     266.9          16.0                9.3 +/-    2.36      22.6 +/-    2.36  0.180 / 0.380
G10     72.1           54.5                7.8 +/-    0.75       9.3 +/-    0.75  0.290 / 0.480
G11     308.5          19.3                6.4 +/-    1.45      14.4 +/-    1.45  0.040 / 0.050
G14     276.2          67.9                7.3 +/-    0.59       7.8 +/-    0.59  0.040 / 0.060
G18     309.2          36.8                6.6 +/-    1.21      10.2 +/-    1.21  0.070 / 0.090
G20     100.8          32.7                7.1 +/-    0.80      11.8 +/-    0.80  0.070 / 0.100
G21     156.1          11.3                8.1 +/-    3.47      22.1 +/-    3.47  0.030 / 0.020
G27     228.2          12.9                7.6 +/-    2.35      20.0 +/-    2.35  0.030 / 0.030
G31     175.8          37.0                9.5 +/-    0.81      14.6 +/-    0.81  0.170 / 0.360
G32     353.8          71.6                6.6 +/-    0.52       6.9 +/-    0.52  0.130 / 0.350