PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-01:57:40
G08     296.5          23.1                9.1 +/-    0.61      18.6 +/-    0.61  0.030 / 0.040
G10     354.6          62.5                9.2 +/-    0.71      10.3 +/-    0.71  0.040 / 0.030
G14     226.2          43.9               11.2 +/-    2.52      15.4 +/-    2.52  0.050 / 0.060
G18     55.7           54.4               10.6 +/-    0.67      12.7 +/-    0.67  0.040 / 0.050
G21     143.3          44.6               10.8 +/-    0.49      14.6 +/-    0.49  0.060 / 0.080
G24     62.1           28.4                9.5 +/-    1.18      17.3 +/-    1.18  0.050 / 0.090
G27     257.9          33.7               12.8 +/-    1.36      20.9 +/-    1.36  0.140 / 0.090
G32     237.1          61.9               10.8 +/-    1.43      12.0 +/-    1.43  0.090 / 0.100