PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-14:57:30
G10     293.6          51.5                7.0 +/-    1.13       8.7 +/-    1.13  0.060 / 0.100
G15     46.2           28.0                3.2 +/-    1.01       5.8 +/-    1.01  0.060 / 0.090
G20     351.9          65.4                4.9 +/-    0.94       5.3 +/-    0.94  0.050 / 0.050
G21     84.2           75.1                7.5 +/-    0.63       7.7 +/-    0.63  0.050 / 0.040
G24     103.6          25.0                8.5 +/-    0.70      16.6 +/-    0.70  0.070 / 0.150
G27     304.7          32.7                5.2 +/-    1.50       8.7 +/-    1.50  0.060 / 0.130
G29     168.2          12.1                5.6 +/-    2.24      15.0 +/-    2.24  0.080 / 0.250
G32     208.1          29.7               10.2 +/-    1.51      17.9 +/-    1.51  0.140 / 0.210