PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-10:27:50
G02     28.5           59.0                3.0 +/-    0.74       3.5 +/-    0.74  0.030 / 0.020
G05     148.7          57.6                4.8 +/-    0.61       5.5 +/-    0.61  0.030 / 0.030
G06     50.8           20.6               -0.2 +/-    2.27      -0.4 +/-    2.27  0.100 / 0.160
G12     208.1          73.0                3.7 +/-    0.73       3.9 +/-    0.73  0.100 / 0.180
G19     95.6           14.1                3.5 +/-    1.19       9.0 +/-    1.19  0.040 / 0.050
G25     296.7          56.3               20.2 +/-    1.75      23.8 +/-    1.75  0.040 / 0.050
G29     304.9          26.1                3.4 +/-    1.81       6.6 +/-    1.81  0.030 / 0.050