PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/21-00:43:10
G05     48.8           18.7                9.2 +/-    3.52      20.8 +/-    3.52  0.250 / 0.410
G10     236.9          12.1               10.3 +/-   38.33      27.5 +/-   38.33  0.220 / 0.370
G13     76.0           37.3               12.6 +/-    2.16      19.1 +/-    2.16  0.050 / 0.070
G15     127.6          52.2               14.5 +/-    1.73      17.8 +/-    1.73  0.040 / 0.060
G16     314.4          12.0                9.6 +/-   11.82      25.7 +/-   11.82  0.130 / 0.300
G18     245.8          41.3               -4.4 +/-   53.64      -6.2 +/-   53.64  0.120 / 0.270
G20     30.7           64.0               12.2 +/-    3.14      13.4 +/-    3.14  0.220 / 0.270
G21     313.3          47.5               10.3 +/-    1.23      13.4 +/-    1.23  0.200 / 0.340
G26     287.9          20.0                8.8 +/-    1.28      19.3 +/-    1.28  0.060 / 0.150
G29     156.1          69.4               12.7 +/-    3.29      13.5 +/-    3.29  0.110 / 0.140