PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-08:27:50
G01     98.8           28.0                3.3 +/-    1.03       6.1 +/-    1.03  0.040 / 0.040
G07     115.8          51.9                6.1 +/-    0.44       7.5 +/-    0.44  0.030 / 0.040
G08     41.7           16.9                3.1 +/-    2.33       7.4 +/-    2.33  0.090 / 0.130
G11     82.0           44.3                5.3 +/-    1.87       7.2 +/-    1.87  0.090 / 0.120
G13     303.5          33.5                5.7 +/-    1.55       9.4 +/-    1.55  0.100 / 0.160
G17     208.0          42.3                6.4 +/-    0.58       8.9 +/-    0.58  0.160 / 0.240
G18     72.9           24.7                3.6 +/-    1.24       7.0 +/-    1.24  0.080 / 0.180
G19     209.7          20.5                4.4 +/-    1.58       9.5 +/-    1.58  0.100 / 0.130
G28     315.0          59.4                5.6 +/-    1.02       6.3 +/-    1.02  0.030 / 0.030
G30     44.3           80.6                7.6 +/-    0.75       7.7 +/-    0.75  0.030 / 0.030