PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-13:13:10
G10     301.9          53.0                3.2 +/-    1.00       3.9 +/-    1.00  0.080 / 0.240
G14     211.5          13.8                2.3 +/-    1.37       5.9 +/-    1.37  0.090 / 0.220
G15     45.5           23.7                2.1 +/-    0.76       4.1 +/-    0.76  0.060 / 0.070
G20     72.0           20.3                2.6 +/-    0.86       5.8 +/-    0.86  0.060 / 0.080
G21     109.5          69.3                4.0 +/-    1.06       4.3 +/-    1.06  0.100 / 0.400
G24     94.7           27.8                4.4 +/-    0.92       8.1 +/-    0.92  0.090 / 0.520
G27     295.5          36.1                3.6 +/-    1.35       5.6 +/-    1.35  0.030 / 0.040
G32     212.2          35.9                4.9 +/-    2.11       7.7 +/-    2.11  0.030 / 0.030