PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-18:58:00
G03     209.0          56.5               12.6 +/-    0.67      14.7 +/-    0.67  0.030 / 0.040
G07     258.9          19.4               12.3 +/-    1.57      27.4 +/-    1.57  0.030 / 0.040
G09     310.7          28.9                9.1 +/-    1.17      16.4 +/-    1.17  0.180 / 0.320
G16     103.2          65.5               12.3 +/-    0.37      13.4 +/-    0.37  0.190 / 0.340
G22     187.1          39.5               14.4 +/-    1.69      21.2 +/-    1.69  0.080 / 0.120
G23     329.0          59.2               11.1 +/-    0.91      12.7 +/-    0.91  0.070 / 0.160
G27     135.9          10.3               -3.1 +/-   35.84      -8.6 +/-   35.84  0.090 / 0.130
G31     58.9           12.6                7.7 +/-    1.71      20.4 +/-    1.71  0.100 / 0.110