PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-15:43:10
G01     291.7          39.9               12.5 +/-    3.14      18.1 +/-    3.14  0.040 / 0.080
G03     312.4          20.0                5.6 +/-    1.75      12.3 +/-    1.75  0.050 / 0.080
G10     119.3          29.5                9.1 +/-    2.31      16.1 +/-    2.31  0.060 / 0.050
G11     269.3          25.6                8.0 +/-    1.01      15.5 +/-    1.01  0.050 / 0.050
G14     20.1           60.2                6.9 +/-    1.29       7.8 +/-    1.29  0.030 / 0.020
G22     314.1          39.9                5.8 +/-    1.28       8.4 +/-    1.28  0.020 / 0.020
G25     68.1           19.1                7.7 +/-    1.06      17.3 +/-    1.06  0.100 / 0.140
G26     156.2          13.2               10.7 +/-   16.02      27.7 +/-   16.02  0.090 / 0.140
G31     126.0          78.8                8.7 +/-    0.60       8.9 +/-    0.60  0.060 / 0.070
G32     51.2           41.6                6.5 +/-    1.05       9.2 +/-    1.05  0.060 / 0.090