PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-23:57:40
G01     244.7          34.0               11.6 +/-    2.26      18.8 +/-    2.26  0.040 / 0.040
G03     315.8          45.4                8.9 +/-    1.32      11.9 +/-    1.32  0.030 / 0.040
G14     60.1           42.1                8.3 +/-    1.65      11.6 +/-    1.65  0.040 / 0.080
G16     159.7          21.7                4.2 +/-   17.41       8.8 +/-   17.41  0.040 / 0.090
G22     301.1          66.9                8.6 +/-    0.73       9.3 +/-    0.73  0.050 / 0.050
G23     289.2          21.9               10.8 +/-    1.71      22.8 +/-    1.71  0.050 / 0.060
G26     132.9          40.7               10.0 +/-    0.92      14.4 +/-    0.92  0.090 / 0.080
G31     41.4           54.2                8.6 +/-    0.69      10.3 +/-    0.69  0.100 / 0.110
G32     80.0           20.0                7.7 +/-    1.28      16.9 +/-    1.28  0.180 / 0.210