PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-09:57:40
G08     280.3          20.3                4.8 +/-    2.22      10.6 +/-    2.22  0.040 / 0.080
G10     42.9           61.5                4.0 +/-    0.51       4.5 +/-    0.51  0.040 / 0.090
G14     247.2          56.2                6.9 +/-    0.99       8.2 +/-    0.99  0.130 / 0.180
G18     316.1          23.1                2.1 +/-    1.97       4.4 +/-    1.97  0.090 / 0.170
G20     100.0          12.7                5.1 +/-    1.36      13.5 +/-    1.36  0.120 / 0.440
G21     152.7          24.0                6.1 +/-    1.03      12.2 +/-    1.03  0.130 / 0.560
G24     44.0           16.4                2.8 +/-    1.81       6.8 +/-    1.81  0.030 / 0.030
G27     238.4          21.7                6.3 +/-    2.91      13.3 +/-    2.91  0.030 / 0.030
G31     178.8          22.9                5.4 +/-    2.00      11.1 +/-    2.00  0.090 / 0.180
G32     308.3          76.7                5.6 +/-    0.74       5.8 +/-    0.74  0.090 / 0.290