PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-00:58:00
G10     274.7          41.7                9.5 +/-    0.66      13.5 +/-    0.66  0.170 / 0.250
G13     39.6           14.1                8.3 +/-    2.76      21.0 +/-    2.76  0.160 / 0.190
G15     53.9           44.9                8.7 +/-    0.91      11.7 +/-    0.91  0.030 / 0.030
G18     314.8          65.8                9.3 +/-    0.74      10.1 +/-    0.74  0.030 / 0.030
G20     60.1           28.3                7.6 +/-    1.81      13.8 +/-    1.81  0.120 / 0.170
G21     25.4           75.8               10.5 +/-    0.60      10.8 +/-    0.60  0.110 / 0.180
G24     115.4          18.1               11.9 +/-    1.18      27.5 +/-    1.18  0.070 / 0.070
G27     313.6          25.6                8.1 +/-    2.19      15.5 +/-    2.19  0.050 / 0.050
G29     167.6          21.5               11.6 +/-    1.48      24.6 +/-    1.48  0.130 / 0.130
G32     206.0          14.8               13.2 +/-    2.02      32.9 +/-    2.02  0.080 / 0.120