PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/23-22:57:50
G03     257.8          69.9                8.5 +/-    0.33       9.0 +/-    0.33  0.040 / 0.050
G09     301.8          18.5                8.1 +/-    1.88      18.5 +/-    1.88  0.040 / 0.050
G14     93.4           21.9                7.5 +/-    1.77      15.7 +/-    1.77  0.120 / 0.200
G16     130.6          54.9               11.8 +/-    0.77      14.0 +/-    0.77  0.140 / 0.240
G22     202.7          60.9               10.4 +/-    0.67      11.8 +/-    0.67  0.040 / 0.040
G23     315.4          45.2                8.3 +/-    0.71      11.1 +/-    0.71  0.040 / 0.040
G26     77.1           53.2                7.7 +/-    0.53       9.3 +/-    0.53  0.040 / 0.050
G31     50.2           22.9                5.7 +/-    2.86      11.7 +/-    2.86  0.040 / 0.050