PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-00:42:30
G10     243.0          19.8               13.3 +/-    2.38      29.3 +/-    2.38  0.040 / 0.040
G13     63.4           34.2               10.3 +/-    0.95      16.5 +/-    0.95  0.050 / 0.040
G15     110.2          57.4               13.0 +/-    0.79      15.1 +/-    0.79  0.070 / 0.130
G16     303.8          15.5                7.8 +/-    1.52      19.1 +/-    1.52  0.070 / 0.110
G20     253.1          33.0               13.9 +/-    3.35      23.0 +/-    3.35  0.090 / 0.280
G21     322.0          52.9               11.4 +/-    0.50      13.9 +/-    0.50  0.090 / 0.390
G26     275.6          19.0                9.4 +/-    1.02      21.1 +/-    1.02  0.030 / 0.040
G29     162.1          62.0               11.5 +/-    0.50      12.9 +/-    0.50  0.030 / 0.040