PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-20:43:00
G01     253.4          36.8                6.8 +/-    1.21      10.5 +/-    1.21  0.070 / 0.110
G03     316.4          41.5                9.6 +/-    1.67      13.7 +/-    1.67  0.080 / 0.120
G11     237.6          12.8                6.5 +/-    3.23      16.9 +/-    3.23  0.070 / 0.110
G14     58.3           41.6                9.0 +/-    0.64      12.8 +/-    0.64  0.060 / 0.090
G18     218.9          28.0                9.0 +/-    1.43      16.5 +/-    1.43  0.210 / 0.670
G22     307.2          63.8                9.0 +/-    0.94       9.9 +/-    0.94  0.160 / 0.510
G23     284.2          16.3               10.3 +/-    2.89      24.7 +/-    2.89  0.050 / 0.090
G26     141.2          35.2               12.1 +/-    0.54      19.2 +/-    0.54  0.050 / 0.110
G31     41.5           65.1                9.3 +/-    0.39      10.1 +/-    0.39  0.030 / 0.040
G32     74.8           25.1                9.5 +/-    0.60      18.6 +/-    0.60  0.030 / 0.040