PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-21:43:00
G03     253.4          69.8                9.3 +/-    0.85       9.8 +/-    0.85  0.040 / 0.050
G09     302.9          20.4                6.6 +/-    1.79      14.3 +/-    1.79  0.040 / 0.070
G14     94.8           20.2                8.1 +/-    2.09      17.6 +/-    2.09  0.130 / 0.310
G16     128.8          55.8               11.0 +/-    1.25      13.0 +/-    1.25  0.130 / 0.260
G22     200.7          59.4                9.2 +/-    0.36      10.5 +/-    0.36  0.040 / 0.080
G23     316.1          45.9                7.9 +/-    0.78      10.5 +/-    0.78  0.050 / 0.070
G26     75.4           53.0                7.4 +/-    0.95       9.0 +/-    0.95  0.040 / 0.030
G31     50.6           22.5                6.0 +/-    3.01      12.4 +/-    3.01  0.040 / 0.030