PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:43:00
G02     203.3          27.9                5.7 +/-    1.85      10.4 +/-    1.85  0.080 / 0.140
G06     158.7          66.8                6.5 +/-    0.71       7.0 +/-    0.71  0.050 / 0.120
G12     307.0          17.1                3.9 +/-    1.79       9.2 +/-    1.79  0.200 / 0.310
G17     34.4           50.4                4.7 +/-    0.63       5.9 +/-    0.63  0.080 / 0.240
G19     341.7          68.2                5.7 +/-    0.83       6.0 +/-    0.83  0.030 / 0.030
G24     300.2          37.6                4.9 +/-    0.84       7.4 +/-    0.84  0.030 / 0.030
G28     98.6           33.8                5.0 +/-    0.44       8.1 +/-    0.44  0.040 / 0.030