PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-22:58:00
G01     235.6          25.4                7.5 +/-    1.69      14.6 +/-    1.69  0.030 / 0.020
G03     307.5          58.3                6.9 +/-    0.95       8.0 +/-    0.95  0.030 / 0.030
G14     76.1           31.1                6.5 +/-    1.56      11.1 +/-    1.56  0.080 / 0.130
G16     159.0          31.0               10.4 +/-    1.17      17.8 +/-    1.17  0.070 / 0.110
G22     263.3          75.3                9.1 +/-    0.58       9.4 +/-    0.58  0.050 / 0.050
G23     298.0          28.5                6.3 +/-    2.03      11.4 +/-    2.03  0.060 / 0.050
G26     121.3          49.3                8.9 +/-    0.62      11.3 +/-    0.62  0.180 / 0.210
G31     40.8           45.2                6.3 +/-    1.03       8.5 +/-    1.03  0.130 / 0.200
G32     89.9           14.2                7.6 +/-    2.14      19.3 +/-    2.14  0.100 / 0.190