PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-16:13:00
G01     228.5          19.0               12.2 +/-    1.77      27.6 +/-    1.77  0.070 / 0.180
G03     286.1          69.7               11.5 +/-    1.23      12.2 +/-    1.23  0.070 / 0.230
G14     83.1           28.1               10.0 +/-    0.86      18.2 +/-    0.86  0.050 / 0.100
G16     148.4          42.8               14.2 +/-    1.23      19.8 +/-    1.23  0.050 / 0.100
G22     212.5          71.7               12.2 +/-    1.10      12.8 +/-    1.10  0.200 / 0.360
G23     307.0          38.0               10.7 +/-    1.59      16.0 +/-    1.59  0.160 / 0.260
G26     100.1          53.4               12.7 +/-    0.93      15.4 +/-    0.93  0.030 / 0.040
G31     44.6           33.2                8.1 +/-    0.71      13.3 +/-    0.71  0.030 / 0.050