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                7.2 +/-    1.06      10.4 +/-    1.06  0.090 / 0.150
G03     312.4          20.0                7.5 +/-    1.41      16.4 +/-    1.41  0.090 / 0.110
G10     119.3          29.5                8.8 +/-    1.00      15.6 +/-    1.00  0.020 / 0.030
G11     269.3          25.6                9.1 +/-    1.28      17.5 +/-    1.28  0.030 / 0.020
G14     20.1           60.2                7.3 +/-    0.52       8.2 +/-    0.52  0.040 / 0.100
G22     314.1          39.9                5.1 +/-    1.86       7.4 +/-    1.86  0.060 / 0.100
G25     68.1           19.1                7.6 +/-    0.63      17.1 +/-    0.63  0.050 / 0.060
G26     156.2          13.2               12.0 +/-    3.02      31.2 +/-    3.02  0.050 / 0.070
G31     126.0          78.8                8.9 +/-    0.42       9.0 +/-    0.42  0.040 / 0.100
G32     51.2           41.6                6.0 +/-    0.40       8.6 +/-    0.40  0.050 / 0.090