PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-04:12:40
G08     280.9          22.8                6.8 +/-    1.20      14.0 +/-    1.20  0.050 / 0.110
G10     27.6           63.0                4.8 +/-    0.89       5.3 +/-    0.89  0.070 / 0.110
G14     241.8          57.0                6.6 +/-    1.13       7.7 +/-    1.13  0.070 / 0.120
G18     74.2           47.1                4.8 +/-    0.91       6.3 +/-    0.91  0.080 / 0.140
G21     150.4          30.3                8.3 +/-    1.20      14.4 +/-    1.20  0.040 / 0.040
G24     48.9           21.6                3.3 +/-    1.12       7.1 +/-    1.12  0.030 / 0.040
G27     242.7          25.5                8.0 +/-    3.53      15.5 +/-    3.53  0.080 / 0.140
G31     181.4          15.4               11.7 +/-    2.59      28.8 +/-    2.59  0.080 / 0.160
G32     272.9          73.7                5.9 +/-    1.18       6.1 +/-    1.18  0.050 / 0.070