PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-20:58:00
G01     237.1          27.0               10.2 +/-    1.03      19.0 +/-    1.03  0.060 / 0.110
G03     309.7          56.8                8.1 +/-    1.86       9.4 +/-    1.86  0.110 / 0.120
G14     74.1           32.0                3.7 +/-    1.47       6.2 +/-    1.47  0.060 / 0.100
G16     157.1          30.3               11.1 +/-    1.52      19.4 +/-    1.52  0.080 / 0.150
G18     208.6          15.5                9.4 +/-    2.04      23.2 +/-    2.04  0.040 / 0.040
G22     269.4          74.9                8.8 +/-    0.88       9.1 +/-    0.88  0.040 / 0.050
G23     295.9          26.2               10.0 +/-    3.05      19.0 +/-    3.05  0.120 / 0.130
G26     125.1          47.9               10.5 +/-    1.02      13.6 +/-    1.02  0.090 / 0.140
G31     40.1           49.2                7.1 +/-    0.91       9.1 +/-    0.91  0.160 / 0.180
G32     88.0           15.5                8.2 +/-    2.08      20.2 +/-    2.08  0.090 / 0.160