PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-20:12:40
G01     40.8           16.1                7.6 +/-    2.62      18.4 +/-    2.62  0.050 / 0.070
G06     176.1          37.0               13.8 +/-    1.15      21.2 +/-    1.15  0.050 / 0.070
G13     236.9          22.7               14.8 +/-    1.26      30.6 +/-    1.26  0.150 / 0.270
G15     270.3          12.4               11.2 +/-    1.76      29.8 +/-    1.76  0.140 / 0.300
G17     1.1            70.9               10.4 +/-    0.39      11.0 +/-    0.39  0.100 / 0.280
G19     276.5          69.5                9.5 +/-    0.62      10.1 +/-    0.62  0.110 / 0.280
G24     316.2          19.5                8.4 +/-    1.18      18.7 +/-    1.18  0.040 / 0.050
G28     66.1           50.5                9.9 +/-    0.92      12.4 +/-    0.92  0.040 / 0.040
G30     153.8          25.7               12.7 +/-    0.79      24.5 +/-    0.79  0.100 / 0.330