PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-18:27:50
G02     249.4          76.4               11.3 +/-    0.42      11.6 +/-    0.42  0.120 / 0.130
G05     170.6          19.0               14.8 +/-    1.95      33.3 +/-    1.95  0.090 / 0.110
G06     40.4           53.0               11.2 +/-    0.53      13.6 +/-    0.53  0.080 / 0.110
G12     322.4          59.5                9.9 +/-    1.14      11.2 +/-    1.14  0.140 / 0.150
G17     74.0           19.9               11.0 +/-    1.88      24.3 +/-    1.88  0.340 / 0.300
G19     58.1           39.1               10.0 +/-    0.99      14.7 +/-    0.99  0.360 / 0.310
G24     240.1          32.6               12.4 +/-    2.34      20.6 +/-    2.34  0.040 / 0.040
G25     317.2          15.7                8.3 +/-    2.83      20.3 +/-    2.83  0.030 / 0.040