PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-04:12:30
G08     294.8          22.7                9.3 +/-    1.03      19.2 +/-    1.03  0.070 / 0.110
G10     5.3            63.0                7.6 +/-    0.51       8.4 +/-    0.51  0.080 / 0.120
G14     228.8          42.7               12.8 +/-    1.14      17.8 +/-    1.14  0.050 / 0.090
G20     50.3           59.9                8.4 +/-    0.50       9.5 +/-    0.50  0.050 / 0.090
G21     146.2          42.2                9.8 +/-    1.03      13.8 +/-    1.03  0.030 / 0.030
G24     56.1           25.3                6.5 +/-    1.16      12.6 +/-    1.16  0.030 / 0.030
G27     255.4          32.1               12.6 +/-    1.59      21.2 +/-    1.59  0.040 / 0.080
G32     245.7          68.9                9.4 +/-    0.56      10.0 +/-    0.56  0.040 / 0.080