PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-22:58:00
G08     281.4          22.7               12.5 +/-    1.10      25.9 +/-    1.10  0.030 / 0.040
G10     28.0           62.9                9.8 +/-    0.86      10.8 +/-    0.86  0.020 / 0.030
G14     241.5          56.5               11.4 +/-    0.76      13.4 +/-    0.76  0.070 / 0.140
G18     76.0           45.3               10.4 +/-    0.89      13.9 +/-    0.89  0.080 / 0.130
G21     149.9          28.0               12.2 +/-    1.10      22.3 +/-    1.10  0.130 / 0.300
G24     48.9           21.5                8.3 +/-    0.95      17.6 +/-    0.95  0.080 / 0.310
G27     242.8          25.5               13.6 +/-    1.95      26.3 +/-    1.95  0.060 / 0.160
G31     183.7          12.7               14.4 +/-    2.27      37.8 +/-    2.27  0.070 / 0.140
G32     267.4          71.7               10.1 +/-    0.62      10.5 +/-    0.62  0.060 / 0.180