PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-18:43:00
G01     306.1          34.3                9.1 +/-    1.79      14.7 +/-    1.79  0.130 / 0.130
G10     107.5          38.3               10.3 +/-    1.06      15.4 +/-    1.06  0.070 / 0.100
G11     278.6          28.3                9.2 +/-    1.45      16.7 +/-    1.45  0.080 / 0.220
G14     1.6            66.1                8.0 +/-    0.73       8.7 +/-    0.73  0.080 / 0.170
G18     269.7          51.6               11.2 +/-    0.65      13.8 +/-    0.65  0.040 / 0.050
G20     121.3          12.9               11.5 +/-    1.44      30.0 +/-    1.44  0.040 / 0.050
G22     310.4          26.8                7.4 +/-    1.06      13.8 +/-    1.06  0.050 / 0.070
G25     75.4           15.6                7.3 +/-    1.80      17.8 +/-    1.80  0.050 / 0.080
G31     173.3          62.9               10.5 +/-    0.91      11.7 +/-    0.91  0.110 / 0.170
G32     36.2           52.5                7.8 +/-    0.46       9.6 +/-    0.46  0.080 / 0.150