PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-18:12:50
G01     253.6          36.3                8.4 +/-    1.16      13.0 +/-    1.16  0.050 / 0.100
G03     316.2          44.4                7.5 +/-    1.60      10.2 +/-    1.60  0.050 / 0.080
G11     241.2          13.9                8.5 +/-    1.15      21.9 +/-    1.15  0.040 / 0.050
G14     57.3           43.0                7.4 +/-    1.45      10.3 +/-    1.45  0.040 / 0.050
G22     306.5          65.4                8.6 +/-    1.22       9.4 +/-    1.22  0.040 / 0.040
G23     285.6          19.0                8.2 +/-    1.20      18.6 +/-    1.20  0.030 / 0.040
G25     41.7           11.7                6.7 +/-    3.08      18.1 +/-    3.08  0.080 / 0.100
G26     137.8          36.4               10.9 +/-    0.64      16.9 +/-    0.64  0.070 / 0.120
G31     41.4           60.2                7.9 +/-    0.57       8.9 +/-    0.57  0.040 / 0.060
G32     76.0           23.7                7.8 +/-    0.83      15.8 +/-    0.83  0.040 / 0.070