PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-14:28:00
G08     288.4          22.0                5.6 +/-    0.83      11.9 +/-    0.83  0.090 / 0.080
G10     21.9           63.1                7.0 +/-    1.00       7.7 +/-    1.00  0.070 / 0.090
G14     236.8          51.1                8.3 +/-    1.94      10.4 +/-    1.94  0.090 / 0.110
G21     149.0          30.9                6.0 +/-    0.98      10.3 +/-    0.98  0.060 / 0.120
G24     50.7           22.7                4.5 +/-    2.94       9.3 +/-    2.94  0.200 / 0.300
G27     246.2          27.5                6.1 +/-    2.46      11.3 +/-    2.46  0.200 / 0.350
G31     182.0          12.9                5.0 +/-    3.11      13.2 +/-    3.11  0.100 / 0.080
G32     265.4          73.3                6.4 +/-    0.34       6.7 +/-    0.34  0.070 / 0.100