PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-13:28:10
G08     310.8          17.7                4.7 +/-    1.73      10.9 +/-    1.73  0.050 / 0.060
G10     332.6          60.0                2.8 +/-    0.32       3.2 +/-    0.32  0.050 / 0.060
G14     218.8          30.2                4.6 +/-    2.13       7.9 +/-    2.13  0.040 / 0.040
G20     85.0           9.4                 3.7 +/-   10.91      10.4 +/-   10.91  0.030 / 0.050
G21     135.0          53.8                4.8 +/-    0.80       5.7 +/-    0.80  0.190 / 0.220
G24     73.8           30.3                3.5 +/-    1.02       6.1 +/-    1.02  0.090 / 0.180
G27     272.5          37.4                5.1 +/-    1.68       7.7 +/-    1.68  0.050 / 0.060
G32     224.2          53.7                5.3 +/-    2.06       6.4 +/-    2.06  0.060 / 0.060