PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-00:43:00
G01     316.4          23.4                6.2 +/-    1.23      12.5 +/-    1.23  0.080 / 0.150
G10     89.8           48.8                8.4 +/-    1.28      10.7 +/-    1.28  0.190 / 0.140
G11     295.7          26.2                6.3 +/-    2.28      12.0 +/-    2.28  0.040 / 0.050
G14     316.7          71.0                6.7 +/-    0.73       7.0 +/-    0.73  0.050 / 0.040
G18     296.4          45.7                7.4 +/-    3.69       9.8 +/-    3.69  0.100 / 0.310
G20     110.9          24.2                7.8 +/-    0.80      15.5 +/-    0.80  0.120 / 0.360
G22     304.0          14.7                4.5 +/-    2.12      11.2 +/-    2.12  0.110 / 0.210
G25     93.1           11.2                7.0 +/-   18.60      18.9 +/-   18.60  0.100 / 0.180
G31     173.6          50.0                8.4 +/-    1.05      10.6 +/-    1.05  0.220 / 0.300
G32     20.9           61.8                6.5 +/-    0.71       7.2 +/-    0.71  0.200 / 0.270