PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-23:57:50
G08     316.6          14.8               21.3 +/-    2.89      53.2 +/-    2.89  0.060 / 0.120
G10     311.2          55.5               23.0 +/-    1.27      27.3 +/-    1.27  0.060 / 0.120
G14     213.2          22.4               25.3 +/-    1.43      52.7 +/-    1.43  0.030 / 0.040
G15     45.6           20.6               19.2 +/-    1.37      41.7 +/-    1.37  0.030 / 0.050
G18     18.1           63.7               23.5 +/-    0.53      25.9 +/-    0.53  0.040 / 0.070
G20     78.5           11.3               19.9 +/-    1.48      53.9 +/-    1.48  0.050 / 0.080
G21     120.1          65.9               25.5 +/-    0.58      27.6 +/-    0.58  0.140 / 0.600
G24     88.3           29.6               23.2 +/-    1.17      41.0 +/-    1.17  0.110 / 0.520
G27     287.0          37.8               23.5 +/-    1.19      35.5 +/-    1.19  0.100 / 0.270
G32     216.0          39.3               25.5 +/-    1.42      37.6 +/-    1.42  0.110 / 0.310