PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-16:27:50
G02     251.6          76.2                9.9 +/-    0.91      10.1 +/-    0.91  0.110 / 0.210
G05     170.7          19.7               10.7 +/-    1.85      23.7 +/-    1.85  0.090 / 0.230
G06     40.5           51.3                9.9 +/-    0.40      12.3 +/-    0.40  0.080 / 0.170
G12     322.6          62.2                8.6 +/-    0.63       9.6 +/-    0.63  0.080 / 0.150
G17     75.6           17.9                9.2 +/-    0.79      21.3 +/-    0.79  0.030 / 0.040
G19     58.8           38.9                9.7 +/-    0.66      14.4 +/-    0.66  0.030 / 0.040
G24     238.3          31.8               10.5 +/-    0.80      17.7 +/-    0.80  0.080 / 0.210
G25     317.3          17.2               10.0 +/-    1.83      23.5 +/-    1.83  0.110 / 0.210