PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-09:42:20
G02     34.1           54.3                6.9 +/-    0.98       8.3 +/-    0.98  0.030 / 0.040
G05     139.5          62.8                9.8 +/-    0.48      10.9 +/-    0.48  0.030 / 0.040
G06     53.5           16.9                5.2 +/-    2.57      12.3 +/-    2.57  0.040 / 0.030
G12     199.7          67.6                5.7 +/-    0.44       6.2 +/-    0.44  0.040 / 0.030
G19     100.2          10.4                8.5 +/-    1.42      23.5 +/-    1.42  0.140 / 0.130
G25     288.3          58.6                6.4 +/-    1.61       7.3 +/-    1.61  0.120 / 0.170
G29     309.1          30.6                5.0 +/-    1.06       8.7 +/-    1.06  0.030 / 0.030