PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-16:13:10
G01     295.5          38.8                9.0 +/-    1.40      13.3 +/-    1.40  0.050 / 0.110
G03     311.2          17.0                5.2 +/-    2.16      12.3 +/-    2.16  0.050 / 0.110
G10     116.7          32.0               10.2 +/-    0.63      17.2 +/-    0.63  0.020 / 0.040
G11     272.3          26.4                8.2 +/-    1.72      15.5 +/-    1.72  0.020 / 0.030
G14     15.5           61.8                6.6 +/-    0.62       7.4 +/-    0.62  0.050 / 0.120
G22     313.4          36.7                7.6 +/-    1.70      11.7 +/-    1.70  0.050 / 0.090
G25     71.3           18.9                7.9 +/-    0.90      17.9 +/-    0.90  0.040 / 0.060
G26     158.2          10.8               -8.2 +/-   45.37     -22.4 +/-   45.37  0.040 / 0.060
G31     141.8          76.8                9.3 +/-    0.33       9.5 +/-    0.33  0.090 / 0.090
G32     48.2           43.9                6.9 +/-    0.92       9.4 +/-    0.92  0.070 / 0.080