PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-14:27:50
G02     273.0          79.4                5.6 +/-    0.94       5.7 +/-    0.94  0.110 / 0.200
G05     170.0          22.3                7.6 +/-    1.38      15.8 +/-    1.38  0.110 / 0.210
G06     39.8           48.8                5.3 +/-    0.51       6.8 +/-    0.51  0.070 / 0.150
G12     320.3          61.2                6.3 +/-    0.80       7.1 +/-    0.80  0.070 / 0.140
G17     76.3           19.0                6.0 +/-    0.86      13.6 +/-    0.86  0.080 / 0.150
G19     66.1           31.6                6.2 +/-    0.65      10.5 +/-    0.65  0.080 / 0.160
G24     238.2          29.6                7.4 +/-    0.93      13.1 +/-    0.93  0.040 / 0.050
G25     317.3          18.6                5.9 +/-    0.98      13.5 +/-    0.98  0.030 / 0.050