PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-12:42:50
G08     319.4          11.8                2.0 +/-    2.11       5.4 +/-    2.11  0.050 / 0.080
G10     312.0          55.9                2.2 +/-    0.75       2.6 +/-    0.75  0.050 / 0.080
G14     213.6          19.3                4.4 +/-    2.07       9.8 +/-    2.07  0.110 / 0.420
G15     45.5           18.3                1.7 +/-    1.53       3.9 +/-    1.53  0.110 / 0.500
G20     76.5           16.8                2.2 +/-    0.53       5.3 +/-    0.53  0.040 / 0.050
G21     121.0          64.6                5.4 +/-    0.60       5.9 +/-    0.60  0.040 / 0.040
G24     87.4           29.5                3.0 +/-    0.66       5.3 +/-    0.66  0.130 / 0.580
G27     287.7          37.6                5.0 +/-    0.92       7.6 +/-    0.92  0.140 / 0.420
G32     215.6          42.4                4.8 +/-    1.83       6.7 +/-    1.83  0.040 / 0.030