PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-12:13:00
G08     320.0          11.2               -3.2 +/-   24.51      -8.6 +/-   24.51  0.040 / 0.060
G10     311.0          55.6                2.9 +/-    1.95       3.5 +/-    1.95  0.050 / 0.070
G14     213.4          18.5                2.5 +/-    2.21       5.7 +/-    2.21  0.220 / 0.270
G15     45.5           18.8                2.0 +/-    2.14       4.4 +/-    2.14  0.520 / 0.480
G20     75.9           17.5                2.4 +/-    1.47       5.6 +/-    1.47  0.090 / 0.210
G21     119.9          65.5                3.3 +/-    0.79       3.6 +/-    0.79  0.090 / 0.180
G24     88.0           29.3                3.9 +/-    1.51       6.9 +/-    1.51  0.030 / 0.030
G27     288.5          37.5                3.5 +/-    1.49       5.3 +/-    1.49  0.030 / 0.030
G32     215.2          41.9                5.2 +/-    1.09       7.3 +/-    1.09  0.070 / 0.090