PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-06:12:40
G10     305.7          54.3                3.3 +/-    1.10       3.9 +/-    1.10  0.080 / 0.640
G14     212.6          12.7                4.1 +/-    2.69      10.8 +/-    2.69  0.080 / 0.610
G15     45.6           23.5                2.1 +/-    1.06       4.2 +/-    1.06  0.050 / 0.080
G20     40.5           56.6                3.5 +/-    0.63       4.1 +/-    0.63  0.050 / 0.090
G21     111.1          70.8                1.4 +/-    5.04       1.5 +/-    5.04  0.040 / 0.040
G24     91.0           28.3                4.1 +/-    0.52       7.5 +/-    0.52  0.040 / 0.040
G27     293.7          36.4                5.0 +/-    1.59       7.8 +/-    1.59  0.060 / 0.040
G32     212.9          39.3                6.8 +/-    1.52       9.9 +/-    1.52  0.050 / 0.040