PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-15:13:00
G10     304.0          54.6                5.6 +/-    0.60       6.6 +/-    0.60  0.060 / 0.080
G15     45.4           22.0                3.7 +/-    0.76       7.7 +/-    0.76  0.100 / 0.080
G20     7.9            64.4                6.2 +/-    0.43       6.8 +/-    0.43  0.040 / 0.040
G21     105.6          71.3                7.0 +/-    0.49       7.4 +/-    0.49  0.040 / 0.040
G24     96.3           27.8                9.7 +/-    2.04      17.9 +/-    2.04  0.070 / 0.120
G27     297.5          35.8                7.5 +/-    1.62      11.8 +/-    1.62  0.070 / 0.140
G32     210.8          36.4                8.6 +/-    2.24      13.3 +/-    2.24  0.030 / 0.050