PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-04:43:10
G08     263.1          17.1                8.5 +/-    1.95      20.1 +/-    1.95  0.030 / 0.020
G10     64.5           58.2                2.7 +/-    0.82       3.1 +/-    0.82  0.020 / 0.020
G11     308.0          20.9                4.0 +/-    2.30       8.5 +/-    2.30  0.170 / 0.290
G14     276.9          69.0                4.3 +/-    0.65       4.6 +/-    0.65  0.160 / 0.210
G18     93.4           36.2                3.4 +/-    0.68       5.3 +/-    0.68  0.090 / 0.370
G21     154.6          12.9                1.9 +/-    2.31       5.0 +/-    2.31  0.080 / 0.370
G24     39.3           9.5                 2.3 +/-    4.05       6.6 +/-    4.05  0.030 / 0.030
G27     228.5          13.7                6.6 +/-    1.74      17.1 +/-    1.74  0.030 / 0.030
G31     177.8          33.1                5.5 +/-    1.57       9.1 +/-    1.57  0.050 / 0.040
G32     343.9          73.0                4.3 +/-    0.40       4.5 +/-    0.40  0.050 / 0.040