PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-12:27:40
G08     317.9          13.0                2.9 +/-    1.86       7.5 +/-    1.86  0.030 / 0.060
G10     316.2          56.9                1.8 +/-    0.47       2.1 +/-    0.47  0.030 / 0.040
G14     214.6          21.4                5.9 +/-    2.30      12.6 +/-    2.30  0.060 / 0.090
G15     45.7           16.2                2.9 +/-    0.61       7.1 +/-    0.61  0.070 / 0.090
G20     78.2           15.5                3.8 +/-    1.84       9.3 +/-    1.84  0.120 / 0.390
G21     124.7          62.7                7.2 +/-    1.27       8.0 +/-    1.27  0.100 / 0.290
G24     84.4           29.9                5.6 +/-    0.37       9.9 +/-    0.37  0.090 / 0.170
G27     284.5          37.9                4.7 +/-    0.88       7.1 +/-    0.88  0.080 / 0.200
G32     217.1          45.0                8.3 +/-    1.70      11.1 +/-    1.70  0.130 / 0.210