PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-01:58:10
G08     305.2          21.1                9.5 +/-    1.64      20.2 +/-    1.64  0.130 / 0.110
G10     336.3          60.6                8.0 +/-    0.52       9.1 +/-    0.52  0.110 / 0.070
G14     220.1          35.7               12.7 +/-    1.96      20.0 +/-    1.96  0.020 / 0.020
G15     47.4           9.7                 6.1 +/-    4.18      17.2 +/-    4.18  0.030 / 0.030
G18     42.2           58.7                9.5 +/-    1.29      10.9 +/-    1.29  0.030 / 0.050
G21     136.9          53.5               10.8 +/-    0.56      13.0 +/-    0.56  0.040 / 0.050
G24     71.8           30.4                8.4 +/-    1.38      14.6 +/-    1.38  0.070 / 0.070
G27     268.6          36.9                9.2 +/-    1.57      14.2 +/-    1.57  0.060 / 0.070
G32     226.6          53.9               11.2 +/-    2.16      13.5 +/-    2.16  0.090 / 0.140