PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-23:28:00
G08     296.2          23.1               23.9 +/-    1.41      48.9 +/-    1.41  0.070 / 0.090
G10     356.1          62.6               21.9 +/-    0.69      24.3 +/-    0.69  0.060 / 0.090
G14     226.7          44.2               31.5 +/-    1.20      42.9 +/-    1.20  0.060 / 0.080
G18     57.8           53.4               23.4 +/-    1.33      28.4 +/-    1.33  0.050 / 0.070
G21     143.5          42.8               27.0 +/-    1.17      37.6 +/-    1.17  0.050 / 0.040
G24     61.4           28.2               20.1 +/-    0.74      36.5 +/-    0.74  0.060 / 0.040
G27     257.2          33.5               26.7 +/-    2.29      43.6 +/-    2.29  0.110 / 0.110
G32     237.4          60.8               29.6 +/-    0.89      33.4 +/-    0.89  0.090 / 0.130