PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-23:42:40
G08     289.1          23.4               24.7 +/-    3.16      50.0 +/-    3.16  0.060 / 0.130
G10     11.2           63.2               23.5 +/-    0.69      26.0 +/-    0.69  0.070 / 0.120
G14     232.9          50.3               30.8 +/-    1.97      38.6 +/-    1.97  0.050 / 0.140
G18     66.8           49.8               23.4 +/-    1.61      29.6 +/-    1.61  0.060 / 0.130
G21     147.0          36.0               26.8 +/-    0.54      41.8 +/-    0.54  0.040 / 0.040
G24     54.9           25.5               22.2 +/-    0.60      42.9 +/-    0.60  0.040 / 0.040
G27     249.9          30.0               28.8 +/-    1.93      50.5 +/-    1.93  0.120 / 0.130
G32     248.9          66.5               24.8 +/-    2.05      26.8 +/-    2.05  0.170 / 0.120