PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-22:57:50
G08     268.3          19.0                9.9 +/-    1.66      22.3 +/-    1.66  0.090 / 0.260
G10     55.7           59.9                9.1 +/-    0.50      10.4 +/-    0.50  0.100 / 0.220
G11     312.4          16.5                8.7 +/-    2.67      20.9 +/-    2.67  0.030 / 0.030
G14     263.9          65.9                9.7 +/-    1.67      10.5 +/-    1.67  0.050 / 0.040
G18     89.9           37.3               11.0 +/-    0.95      16.8 +/-    0.95  0.090 / 0.160
G21     153.2          15.0               13.4 +/-    4.80      33.4 +/-    4.80  0.060 / 0.150
G24     41.2           13.0                8.4 +/-    2.20      22.0 +/-    2.20  0.150 / 0.420
G27     232.1          16.9               13.9 +/-    2.66      33.1 +/-    2.66  0.180 / 0.360
G31     181.5          24.8               16.7 +/-    2.47      32.7 +/-    2.47  0.030 / 0.030
G32     318.2          74.8               10.4 +/-    0.95      10.7 +/-    0.95  0.030 / 0.040