PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-07:57:40
G08     304.6          20.0                6.3 +/-    2.43      13.8 +/-    2.43  0.070 / 0.160
G10     348.7          62.0                3.8 +/-    0.48       4.2 +/-    0.48  0.070 / 0.170
G14     223.4          34.2                7.6 +/-    1.01      12.2 +/-    1.01  0.060 / 0.080
G20     75.4           36.3                3.8 +/-    0.38       5.9 +/-    0.38  0.060 / 0.110
G21     141.4          49.1                7.4 +/-    0.98       9.5 +/-    0.98  0.030 / 0.030
G24     64.3           28.5                4.4 +/-    0.58       8.0 +/-    0.58  0.030 / 0.040
G27     263.5          35.3                7.4 +/-    1.07      11.7 +/-    1.07  0.060 / 0.100
G32     232.9          62.3                8.6 +/-    0.90       9.6 +/-    0.90  0.070 / 0.110