PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-15:57:30
G08     291.9          23.7                6.3 +/-    1.04      12.6 +/-    1.04  0.080 / 0.080
G10     13.2           62.6                7.2 +/-    0.68       8.0 +/-    0.68  0.050 / 0.090
G14     228.9          42.8                7.7 +/-    1.96      10.6 +/-    1.96  0.090 / 0.100
G20     69.8           49.0                6.6 +/-    0.52       8.5 +/-    0.52  0.090 / 0.090
G21     146.8          38.8                9.0 +/-    0.86      13.3 +/-    0.86  0.040 / 0.080
G24     56.8           26.1                6.6 +/-    2.08      12.6 +/-    2.08  0.050 / 0.100
G27     253.6          32.0                6.6 +/-    2.28      11.1 +/-    2.28  0.080 / 0.170
G32     247.5          70.2                7.1 +/-    0.70       7.5 +/-    0.70  0.120 / 0.140