PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-01:42:50
G01     308.1          32.3                8.6 +/-    1.18      14.3 +/-    1.18  0.050 / 0.040
G10     104.2          42.0                9.6 +/-    0.98      13.5 +/-    0.98  0.040 / 0.050
G11     282.0          29.2               10.0 +/-    1.29      17.8 +/-    1.29  0.130 / 0.120
G14     357.4          67.0                8.3 +/-    0.50       8.9 +/-    0.50  0.090 / 0.120
G18     116.2          15.6                8.6 +/-    1.45      21.0 +/-    1.45  0.080 / 0.120
G22     308.8          24.0                9.4 +/-    0.61      18.7 +/-    0.61  0.070 / 0.120
G25     80.9           15.8                8.3 +/-    2.68      20.3 +/-    2.68  0.090 / 0.150
G31     172.6          61.2               12.1 +/-    0.62      13.6 +/-    0.62  0.120 / 0.170
G32     30.5           56.0                7.6 +/-    0.82       9.0 +/-    0.82  0.030 / 0.030