PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-01:28:00
G08     291.4          23.5                8.1 +/-    1.17      16.3 +/-    1.17  0.090 / 0.120
G10     5.5            63.1                8.6 +/-    0.66       9.5 +/-    0.66  0.090 / 0.130
G14     230.5          48.3               13.0 +/-    0.75      16.8 +/-    0.75  0.040 / 0.080
G18     62.8           51.7               10.1 +/-    0.45      12.4 +/-    0.45  0.040 / 0.100
G21     146.0          39.4               12.9 +/-    1.13      19.0 +/-    1.13  0.040 / 0.040
G24     57.2           26.6                9.1 +/-    0.84      17.2 +/-    0.84  0.050 / 0.030
G27     252.4          31.3               13.1 +/-    1.53      22.3 +/-    1.53  0.040 / 0.060
G32     245.0          65.7               11.0 +/-    0.44      12.0 +/-    0.44  0.040 / 0.080