PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-23:12:40
G02     256.0          79.0               14.2 +/-    0.34      14.5 +/-    0.34  0.120 / 0.480
G05     169.6          19.7               18.6 +/-    1.34      41.2 +/-    1.34  0.110 / 0.190
G06     39.3           57.4               14.2 +/-    0.53      16.5 +/-    0.53  0.080 / 0.100
G12     320.7          52.5               12.8 +/-    1.41      15.7 +/-    1.41  0.070 / 0.100
G17     73.4           20.0               11.7 +/-    1.54      25.8 +/-    1.54  0.040 / 0.050
G19     60.4           36.0               12.4 +/-    0.95      19.3 +/-    0.95  0.060 / 0.040
G24     240.7          32.6               15.8 +/-    2.26      26.2 +/-    2.26  0.050 / 0.040
G25     316.9          15.4                7.6 +/-    2.53      18.7 +/-    2.53  0.040 / 0.030