PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-11:27:30
G10     296.2          51.8                6.0 +/-    2.29       7.4 +/-    2.29  0.080 / 0.120
G14     209.5          11.3               -5.1 +/-   12.27     -13.8 +/-   12.27  0.100 / 0.110
G15     46.2           28.7                3.4 +/-    1.30       6.1 +/-    1.30  0.080 / 0.070
G20     350.0          65.4                5.4 +/-    0.29       5.9 +/-    0.29  0.070 / 0.070
G21     100.8          70.4                6.3 +/-    0.52       6.6 +/-    0.52  0.030 / 0.040
G24     96.3           25.7                7.6 +/-    1.20      14.5 +/-    1.20  0.030 / 0.030
G27     304.0          32.0                5.1 +/-    1.48       8.5 +/-    1.48  0.240 / 0.320
G32     210.5          27.6                5.3 +/-    1.75       9.8 +/-    1.75  0.110 / 0.300