PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/06-21:27:50
G01     227.4          20.7               22.4 +/-    2.74      48.4 +/-    2.74  0.040 / 0.030
G03     301.2          62.9                7.9 +/-    0.64       8.7 +/-    0.64  0.030 / 0.030
G14     78.7           31.4                7.8 +/-    2.41      13.3 +/-    2.41  0.080 / 0.140
G16     148.4          39.8                9.8 +/-    0.43      14.3 +/-    0.43  0.090 / 0.120
G22     238.1          73.8                9.5 +/-    0.50       9.9 +/-    0.50  0.050 / 0.040
G23     303.0          33.2                7.2 +/-    1.09      11.8 +/-    1.09  0.040 / 0.030
G26     107.9          52.6                8.5 +/-    0.69      10.4 +/-    0.69  0.050 / 0.080
G31     43.6           37.3                7.0 +/-    0.96      10.7 +/-    0.96  0.050 / 0.090