PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-12:42:50
G10     297.6          51.6                4.1 +/-    2.52       5.0 +/-    2.52  0.070 / 0.100
G14     210.7          11.0               -4.5 +/-   14.23     -12.3 +/-   14.23  0.060 / 0.060
G15     45.8           26.3                2.6 +/-    2.52       4.9 +/-    2.52  0.030 / 0.040
G20     69.7           22.5                3.0 +/-    0.99       6.2 +/-    0.99  0.030 / 0.030
G21     102.1          71.6                4.8 +/-    0.88       5.0 +/-    0.88  0.220 / 0.570
G24     97.8           26.7                3.3 +/-    0.81       6.2 +/-    0.81  0.270 / 0.350
G27     298.8          35.0                4.8 +/-    1.41       7.6 +/-    1.41  0.070 / 0.110
G32     210.9          33.1                4.6 +/-    2.03       7.5 +/-    2.03  0.060 / 0.110