PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-01:57:40
G01     308.6          31.9                5.9 +/-    1.61       9.9 +/-    1.61  0.120 / 0.170
G10     103.5          42.4                7.5 +/-    0.46      10.5 +/-    0.46  0.110 / 0.180
G11     282.7          29.2                8.3 +/-    1.10      14.7 +/-    1.10  0.070 / 0.100
G14     356.1          67.3                6.3 +/-    0.92       6.8 +/-    0.92  0.080 / 0.120
G18     115.8          16.1                6.6 +/-    1.69      15.9 +/-    1.69  0.030 / 0.040
G22     308.6          23.6                5.8 +/-    1.21      11.6 +/-    1.21  0.020 / 0.040
G25     81.4           15.6                6.0 +/-    1.35      14.8 +/-    1.35  0.100 / 0.210
G31     172.6          60.7                9.1 +/-    0.77      10.3 +/-    0.77  0.080 / 0.210
G32     30.0           56.3                3.9 +/-    0.50       4.6 +/-    0.50  0.030 / 0.040