PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-01:42:30
G08     317.0          14.5                6.9 +/-    1.90      17.3 +/-    1.90  0.030 / 0.050
G10     310.1          55.2                6.8 +/-    0.52       8.0 +/-    0.52  0.040 / 0.050
G14     212.9          21.9               11.4 +/-    1.76      24.0 +/-    1.76  0.090 / 0.120
G15     45.6           22.1                4.9 +/-    0.80      10.3 +/-    0.80  0.080 / 0.150
G18     15.2           64.2                9.0 +/-    0.72       9.9 +/-    0.72  0.060 / 0.090
G20     78.3           11.2                7.8 +/-    1.90      21.1 +/-    1.90  0.050 / 0.080
G24     89.0           29.4                7.8 +/-    1.13      13.9 +/-    1.13  0.080 / 0.230
G27     287.8          37.7                8.6 +/-    1.13      12.9 +/-    1.13  0.100 / 0.240
G32     215.5          39.7               11.7 +/-    0.90      17.1 +/-    0.90  0.160 / 0.470