PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-14:43:00
G01     46.9           22.8                6.6 +/-    2.38      13.6 +/-    2.38  0.040 / 0.050
G06     176.3          28.0               10.6 +/-    2.21      19.3 +/-    2.21  0.030 / 0.050
G11     44.0           13.1                5.3 +/-    1.79      13.8 +/-    1.79  0.030 / 0.020
G13     246.1          29.4               11.5 +/-    0.97      20.4 +/-    0.97  0.040 / 0.030
G15     280.8          15.0                7.7 +/-    1.94      19.1 +/-    1.94  0.040 / 0.040
G17     311.1          77.7               10.0 +/-    0.51      10.2 +/-    0.51  0.040 / 0.040
G19     252.0          63.8               10.0 +/-    0.61      11.0 +/-    0.61  0.110 / 0.140
G28     48.4           55.6                9.1 +/-    0.70      10.8 +/-    0.70  0.100 / 0.140
G30     150.8          37.6               10.2 +/-    1.07      15.5 +/-    1.07  0.170 / 0.370