PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-22:42:40
G02     240.3          75.7                9.0 +/-    0.45       9.3 +/-    0.45  0.180 / 0.390
G05     171.3          15.9               15.3 +/-    2.68      37.4 +/-    2.68  0.180 / 0.370
G06     40.4           61.5                9.7 +/-    0.44      10.8 +/-    0.44  0.060 / 0.100
G12     320.7          48.2                7.5 +/-    1.30       9.7 +/-    1.30  0.080 / 0.100
G17     69.8           22.7                9.0 +/-    2.26      18.5 +/-    2.26  0.030 / 0.040
G19     56.2           38.6                8.9 +/-    2.18      13.2 +/-    2.18  0.030 / 0.040
G24     245.3          35.1               12.0 +/-    1.66      18.9 +/-    1.66  0.060 / 0.060
G25     316.1          11.6                0.1 +/-   31.58       0.4 +/-   31.58  0.060 / 0.040