PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-17:13:10
G01     41.3           16.9                8.4 +/-    2.10      19.9 +/-    2.10  0.100 / 0.100
G06     175.0          36.8               12.2 +/-    1.68      18.7 +/-    1.68  0.080 / 0.070
G13     237.9          23.6               11.9 +/-    1.49      23.9 +/-    1.49  0.220 / 0.370
G15     271.8          12.8               10.4 +/-    1.40      27.4 +/-    1.40  0.360 / 0.200
G17     352.6          72.9                9.5 +/-    0.66       9.9 +/-    0.66  0.090 / 0.250
G19     273.6          69.3                9.7 +/-    0.71      10.3 +/-    0.71  0.250 / 0.220
G24     316.9          17.7                8.7 +/-    5.28      20.2 +/-    5.28  0.050 / 0.040
G28     63.2           51.7                9.3 +/-    1.09      11.5 +/-    1.09  0.040 / 0.030
G30     153.4          26.9               10.5 +/-    0.71      19.7 +/-    0.71  0.030 / 0.040