PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/04-21:43:00
G01     225.2          18.5                7.2 +/-    3.55      16.5 +/-    3.55  0.030 / 0.030
G03     295.8          65.2                7.2 +/-    1.02       7.9 +/-    1.02  0.030 / 0.040
G14     81.6           29.6                8.1 +/-    1.35      14.2 +/-    1.35  0.090 / 0.130
G16     146.0          42.8                7.8 +/-    0.77      10.8 +/-    0.77  0.100 / 0.120
G22     227.9          72.2                6.8 +/-    0.61       7.1 +/-    0.61  0.050 / 0.030
G23     305.3          35.3                7.7 +/-    1.40      12.1 +/-    1.40  0.040 / 0.030
G26     102.3          53.6                6.5 +/-    0.30       7.9 +/-    0.30  0.040 / 0.090
G31     44.6           34.5                5.6 +/-    1.57       9.0 +/-    1.57  0.050 / 0.070