PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-15:12:30
G10     295.4          52.1                6.5 +/-    2.66       8.0 +/-    2.66  0.050 / 0.070
G15     46.0           27.0                4.9 +/-    1.80       9.1 +/-    1.80  0.050 / 0.090
G20     354.6          65.3                6.4 +/-    0.76       7.0 +/-    0.76  0.410 / 0.510
G21     88.5           74.7                7.4 +/-    0.34       7.6 +/-    0.34  0.170 / 0.350
G24     102.3          25.6                9.9 +/-    0.94      19.1 +/-    0.94  0.040 / 0.030
G27     303.5          33.3                5.4 +/-    2.55       8.8 +/-    2.55  0.040 / 0.040
G29     168.1          11.0                6.9 +/-    2.49      18.8 +/-    2.49  0.080 / 0.070
G32     208.5          30.9                8.8 +/-    1.34      15.0 +/-    1.34  0.070 / 0.050