PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-13:43:10
G08     295.9          21.7                4.8 +/-    2.23      10.1 +/-    2.23  0.060 / 0.110
G10     6.3            63.1                4.0 +/-    1.20       4.5 +/-    1.20  0.100 / 0.090
G14     229.9          44.8                7.0 +/-    2.00       9.4 +/-    2.00  0.040 / 0.080
G21     146.0          38.2                6.6 +/-    0.99       9.8 +/-    0.99  0.040 / 0.100
G24     56.6           26.1                4.4 +/-    2.21       8.4 +/-    2.21  0.120 / 0.090
G27     253.3          31.5                3.7 +/-    3.16       6.2 +/-    3.16  0.080 / 0.100
G32     247.0          68.5                4.4 +/-    0.52       4.7 +/-    0.52  0.030 / 0.050