PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-14:58:10
G10     294.3          51.7                6.2 +/-    2.55       7.7 +/-    2.55  0.060 / 0.090
G15     46.1           27.6                4.5 +/-    1.90       8.4 +/-    1.90  0.060 / 0.090
G20     353.0          65.4                5.7 +/-    0.62       6.2 +/-    0.62  0.130 / 0.080
G21     85.9           74.9                6.6 +/-    0.43       6.8 +/-    0.43  0.080 / 0.070
G24     103.1          25.3               10.3 +/-    1.13      20.0 +/-    1.13  0.250 / 0.360
G27     304.3          33.0                4.6 +/-    2.08       7.6 +/-    2.08  0.350 / 0.370
G29     168.1          11.7                6.9 +/-    1.86      18.4 +/-    1.86  0.040 / 0.040
G32     208.2          30.1                8.6 +/-    2.35      14.9 +/-    2.35  0.040 / 0.030