PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-22:42:50
G02     80.2           17.2                2.8 +/-   10.57       6.6 +/-   10.57  0.040 / 0.080
G05     44.6           35.9               -1.2 +/-    9.49      -1.9 +/-    9.49  0.040 / 0.080
G13     103.0          31.5               11.2 +/-    2.10      19.1 +/-    2.10  0.110 / 0.260
G15     150.4          33.7                3.9 +/-   10.29       6.4 +/-   10.29  0.120 / 0.280
G20     230.8          2.9                 7.4 +/-   11.45      22.9 +/-   11.45  0.090 / 0.150
G21     293.1          32.6                0.6 +/-   11.43       1.0 +/-   11.43  0.080 / 0.140
G25     210.9          29.0                2.2 +/-    9.83       3.9 +/-    9.83  0.120 / 0.160
G26     307.5          18.1                4.6 +/-    9.10      10.5 +/-    9.10  0.080 / 0.130
G29     350.4          80.9               -6.0 +/-    9.68      -6.1 +/-    9.68  0.030 / 0.030