PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-09:12:50
G08     264.9          15.5                5.7 +/-    1.98      13.9 +/-    1.98  0.040 / 0.060
G10     71.4           55.9                3.4 +/-    0.96       4.0 +/-    0.96  0.050 / 0.060
G11     308.3          19.6                4.9 +/-    2.54      10.9 +/-    2.54  0.110 / 0.370
G14     273.3          65.4                2.2 +/-    0.59       2.3 +/-    0.59  0.100 / 0.290
G18     309.3          35.7                3.4 +/-    1.34       5.3 +/-    1.34  0.030 / 0.030
G20     107.8          12.3                3.8 +/-    2.21      10.1 +/-    2.21  0.030 / 0.030
G21     155.5          10.1                3.0 +/-    1.96       8.3 +/-    1.96  0.120 / 0.240
G27     227.2          11.8                3.6 +/-    1.97       9.6 +/-    1.97  0.110 / 0.310
G31     175.4          38.4                5.2 +/-    1.19       7.7 +/-    1.19  0.160 / 0.570
G32     1.3            70.0                4.0 +/-    0.92       4.2 +/-    0.92  0.200 / 0.370