PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/07-15:27:40
G10     300.1          53.5                6.0 +/-    1.87       7.2 +/-    1.87  0.060 / 0.080
G15     45.6           24.4                5.4 +/-    2.35      10.8 +/-    2.35  0.080 / 0.090
G20     1.8            64.9                5.9 +/-    0.56       6.4 +/-    0.56  0.100 / 0.130
G21     98.5           73.1                8.7 +/-    0.78       9.1 +/-    0.78  0.090 / 0.130
G24     99.1           26.9                8.9 +/-    0.64      16.7 +/-    0.64  0.040 / 0.040
G27     300.3          34.8                5.3 +/-    1.06       8.4 +/-    1.06  0.040 / 0.040
G32     209.7          33.9                9.6 +/-    1.46      15.5 +/-    1.46  0.110 / 0.190