PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-14:57:50
G02     201.6          20.2               10.4 +/-    2.09      22.8 +/-    2.09  0.110 / 0.180
G06     166.3          58.1               10.2 +/-    0.67      11.8 +/-    0.67  0.110 / 0.200
G12     302.2          10.9               -2.4 +/-   19.17      -6.5 +/-   19.17  0.090 / 0.110
G13     225.3          11.6                7.3 +/-    1.88      19.5 +/-    1.88  0.100 / 0.090
G17     26.3           56.9                9.7 +/-    1.14      11.4 +/-    1.14  0.210 / 0.690
G19     317.8          70.1                9.9 +/-    0.80      10.4 +/-    0.80  0.180 / 0.550
G24     307.4          32.6                7.1 +/-    1.78      11.7 +/-    1.78  0.220 / 0.260
G28     90.1           38.6                8.6 +/-    1.09      12.8 +/-    1.09  0.140 / 0.270
G30     158.0          14.1               10.9 +/-    1.82      27.7 +/-    1.82  0.030 / 0.040