PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-17:12:50
G01     264.4          39.8               10.7 +/-    1.56      15.6 +/-    1.56  0.030 / 0.040
G03     316.6          36.8                8.7 +/-    0.90      13.4 +/-    0.90  0.030 / 0.040
G10     132.4          13.4               12.5 +/-    2.01      32.2 +/-    2.01  0.040 / 0.050
G11     249.0          18.2                9.8 +/-    1.40      22.5 +/-    1.40  0.040 / 0.050
G14     47.4           48.4                9.2 +/-    1.32      11.8 +/-    1.32  0.110 / 0.300
G22     312.7          57.8                9.4 +/-    1.57      10.9 +/-    1.57  0.110 / 0.360
G25     48.6           15.6                9.2 +/-    1.77      22.6 +/-    1.77  0.040 / 0.080
G26     144.2          29.3               12.6 +/-    1.59      22.5 +/-    1.59  0.040 / 0.080
G31     47.1           68.6               10.6 +/-    0.68      11.2 +/-    0.68  0.060 / 0.090
G32     68.8           28.8                7.9 +/-    0.63      14.2 +/-    0.63  0.060 / 0.090