PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-21:42:50
G01     223.0          14.1                6.7 +/-    7.42      17.1 +/-    7.42  0.180 / 0.210
G03     275.0          69.7                6.4 +/-    0.75       6.8 +/-    0.75  0.150 / 0.410
G09     297.2          12.0                5.0 +/-   15.51      13.3 +/-   15.51  0.040 / 0.060
G14     90.6           20.8                7.1 +/-    2.25      15.4 +/-    2.25  0.040 / 0.050
G16     144.0          48.5                8.1 +/-    0.71      10.4 +/-    0.71  0.150 / 0.260
G22     208.6          66.8                6.8 +/-    0.52       7.3 +/-    0.52  0.180 / 0.270
G23     309.4          38.6                5.3 +/-    1.07       7.9 +/-    1.07  0.040 / 0.030
G26     93.7           55.6                7.2 +/-    0.36       8.5 +/-    0.36  0.040 / 0.030
G31     45.8           32.4                5.5 +/-    0.86       9.1 +/-    0.86  0.060 / 0.080