PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-09:58:00
G01     88.3           31.2                4.2 +/-    1.60       7.3 +/-    1.60  0.050 / 0.060
G07     125.7          43.4                6.5 +/-    0.63       9.0 +/-    0.63  0.050 / 0.060
G08     42.4           10.0                2.3 +/-    1.87       6.5 +/-    1.87  0.040 / 0.050
G11     69.1           41.4                4.9 +/-    1.63       6.9 +/-    1.63  0.050 / 0.040
G13     293.4          37.3                7.7 +/-    3.04      11.7 +/-    3.04  0.160 / 0.170
G17     213.8          51.1                7.2 +/-    1.04       9.0 +/-    1.04  0.080 / 0.150
G18     62.8           23.7                4.0 +/-    1.64       8.1 +/-    1.64  0.180 / 0.230
G19     213.6          29.1                6.3 +/-    1.36      11.3 +/-    1.36  0.110 / 0.390
G28     333.8          61.1                4.1 +/-    0.42       4.6 +/-    0.42  0.020 / 0.020
G30     102.3          77.5                5.4 +/-    0.42       5.5 +/-    0.42  0.030 / 0.020