PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-17:57:40
G01     320.3          14.7                6.1 +/-    0.79      15.3 +/-    0.79  0.130 / 0.350
G08     258.9          15.3                6.2 +/-    3.67      15.4 +/-    3.67  0.150 / 0.460
G10     73.7           54.7               10.0 +/-    0.23      12.0 +/-    0.23  0.070 / 0.210
G11     305.6          22.0                6.3 +/-    1.57      13.2 +/-    1.57  0.070 / 0.250
G14     285.8          70.1                9.7 +/-    0.61      10.3 +/-    0.61  0.070 / 0.050
G18     306.2          40.4                9.1 +/-    1.15      13.1 +/-    1.15  0.070 / 0.050
G20     101.9          31.8               10.3 +/-    0.56      17.3 +/-    0.56  0.030 / 0.040
G27     229.3          12.1                8.2 +/-    5.16      21.8 +/-    5.16  0.040 / 0.050
G31     180.1          34.0               12.1 +/-    1.50      19.6 +/-    1.50  0.120 / 0.380
G32     355.2          70.9               10.1 +/-    0.58      10.6 +/-    0.58  0.130 / 0.450