PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-01:27:40
G10     295.7          51.3                9.0 +/-    1.27      11.1 +/-    1.27  0.070 / 0.110
G15     46.7           31.8                5.7 +/-    1.07       9.7 +/-    1.07  0.060 / 0.110
G20     305.9          55.7                7.8 +/-    1.58       9.2 +/-    1.58  0.050 / 0.070
G21     89.8           75.6                9.0 +/-    0.52       9.2 +/-    0.52  0.040 / 0.050
G24     97.4           25.9                8.6 +/-    1.16      16.5 +/-    1.16  0.080 / 0.140
G27     301.8          33.6                9.1 +/-    1.75      14.8 +/-    1.75  0.080 / 0.140
G32     209.7          32.6                9.8 +/-    1.19      16.2 +/-    1.19  0.060 / 0.060