PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-11:42:30
G01     40.8           16.1                3.8 +/-    2.21       9.3 +/-    2.21  0.340 / 0.330
G06     173.7          38.2                5.3 +/-    1.40       7.9 +/-    1.40  0.210 / 0.330
G13     237.4          23.5                6.6 +/-    1.55      13.3 +/-    1.55  0.030 / 0.020
G15     272.9          12.4                3.7 +/-    1.80       9.9 +/-    1.80  0.030 / 0.030
G17     351.5          73.0                5.9 +/-    0.76       6.1 +/-    0.76  0.040 / 0.040
G19     276.0          70.1                5.4 +/-    0.52       5.7 +/-    0.52  0.040 / 0.040
G24     317.1          16.9                3.1 +/-    1.59       7.2 +/-    1.59  0.140 / 0.220
G28     61.8           52.6                5.0 +/-    1.34       6.2 +/-    1.34  0.230 / 0.270
G30     154.7          30.3                5.4 +/-    0.89       9.4 +/-    0.89  0.070 / 0.090