PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-07:28:00
G08     319.8          11.4                1.2 +/-   12.30       3.4 +/-   12.30  0.100 / 0.240
G10     312.5          56.1                3.7 +/-    0.64       4.3 +/-    0.64  0.100 / 0.300
G14     214.0          16.8                8.1 +/-    2.68      19.2 +/-    2.68  0.040 / 0.080
G15     45.6           19.3                1.5 +/-    0.82       3.4 +/-    0.82  0.030 / 0.080
G20     56.8           46.8                2.8 +/-    0.90       3.7 +/-    0.90  0.050 / 0.100
G21     120.0          67.0                6.0 +/-    0.58       6.5 +/-    0.58  0.060 / 0.090
G24     86.3           29.3                4.9 +/-    0.72       8.8 +/-    0.72  0.040 / 0.040
G27     288.2          37.4                4.0 +/-    0.93       6.1 +/-    0.93  0.030 / 0.030
G32     215.4          43.5                7.4 +/-    1.01      10.1 +/-    1.01  0.080 / 0.110