PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-06:42:50
G08     318.2          12.9                3.7 +/-    2.08       9.6 +/-    2.08  0.040 / 0.030
G10     315.8          56.9                4.0 +/-    0.98       4.7 +/-    0.98  0.040 / 0.040
G14     214.7          18.1                3.6 +/-    2.12       8.4 +/-    2.12  0.080 / 0.240
G15     45.7           18.0                3.0 +/-    2.18       6.8 +/-    2.18  0.270 / 0.370
G20     52.1           51.3                4.1 +/-    1.13       5.1 +/-    1.13  0.110 / 0.190
G21     123.1          65.6                6.7 +/-    0.64       7.3 +/-    0.64  0.130 / 0.200
G24     84.0           29.6                7.4 +/-    1.39      13.0 +/-    1.39  0.080 / 0.060
G27     285.9          37.6                7.3 +/-    0.75      11.1 +/-    0.75  0.070 / 0.060
G32     216.5          45.5                8.5 +/-    1.16      11.3 +/-    1.16  0.030 / 0.060