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                4.4 +/-    1.40       9.6 +/-    1.40  0.060 / 0.150
G10     348.7          62.0                5.1 +/-    0.61       5.7 +/-    0.61  0.080 / 0.130
G14     223.4          34.2                8.6 +/-    1.13      13.8 +/-    1.13  0.080 / 0.090
G20     75.4           36.3                6.5 +/-    0.85      10.0 +/-    0.85  0.080 / 0.100
G21     141.4          49.1                7.1 +/-    0.41       9.1 +/-    0.41  0.030 / 0.040
G24     64.3           28.5                4.8 +/-    1.88       8.6 +/-    1.88  0.040 / 0.060
G27     263.5          35.3                8.2 +/-    2.05      12.9 +/-    2.05  0.070 / 0.070
G32     232.9          62.3                8.5 +/-    1.38       9.5 +/-    1.38  0.060 / 0.090