PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-01:57:50
G01     316.7          22.4               10.9 +/-    2.74      22.5 +/-    2.74  0.030 / 0.040
G10     87.1           51.0                9.9 +/-    1.15      12.3 +/-    1.15  0.030 / 0.040
G11     296.6          26.7                9.6 +/-    0.94      18.1 +/-    0.94  0.130 / 0.180
G14     319.8          71.4               10.7 +/-    0.40      11.2 +/-    0.40  0.120 / 0.200
G18     106.1          25.6                8.8 +/-    1.19      16.9 +/-    1.19  0.180 / 0.260
G22     303.0          14.0                9.3 +/-    2.88      23.7 +/-    2.88  0.090 / 0.180
G25     93.4           10.8               10.4 +/-    2.34      28.6 +/-    2.34  0.050 / 0.040
G31     176.8          46.3               12.6 +/-    0.59      16.7 +/-    0.59  0.040 / 0.030
G32     11.4           65.3                9.5 +/-    0.85      10.4 +/-    0.85  0.030 / 0.040