PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-07:42:40
G08     276.1          21.1                5.5 +/-    1.36      11.8 +/-    1.36  0.080 / 0.110
G10     46.5           60.3                5.2 +/-    1.04       5.9 +/-    1.04  0.070 / 0.150
G14     250.1          61.2                5.2 +/-    0.54       5.8 +/-    0.54  0.100 / 0.210
G18     315.6          26.1                2.9 +/-    1.27       5.6 +/-    1.27  0.090 / 0.170
G20     86.7           42.0                4.9 +/-    0.83       6.9 +/-    0.83  0.040 / 0.020
G21     153.0          22.8                7.6 +/-    1.30      15.7 +/-    1.30  0.030 / 0.030
G24     43.4           15.3                3.4 +/-    2.04       8.4 +/-    2.04  0.050 / 0.050
G27     239.7          22.1                5.1 +/-    1.63      10.7 +/-    1.63  0.050 / 0.050
G31     180.0          21.8                5.6 +/-    1.49      11.7 +/-    1.49  0.030 / 0.020
G32     288.3          74.4                5.3 +/-    0.59       5.5 +/-    0.59  0.040 / 0.020