PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-13:27:50
G01     51.8           26.3                5.2 +/-    1.70       9.9 +/-    1.70  0.040 / 0.050
G06     177.4          22.1                5.5 +/-    1.29      11.6 +/-    1.29  0.040 / 0.050
G07     144.5          12.7                6.9 +/-    3.13      18.0 +/-    3.13  0.100 / 0.180
G11     45.4           18.6                5.8 +/-    1.81      13.3 +/-    1.81  0.100 / 0.170
G13     252.5          32.8                6.0 +/-    2.40       9.9 +/-    2.40  0.030 / 0.020
G15     287.0          15.9                5.7 +/-    0.94      14.0 +/-    0.94  0.030 / 0.030
G17     276.5          76.8                5.8 +/-    0.37       5.9 +/-    0.37  0.160 / 0.320
G19     241.5          59.0                6.9 +/-    2.01       7.9 +/-    2.01  0.160 / 0.240
G28     37.5           57.7                6.2 +/-    1.69       7.2 +/-    1.69  0.120 / 0.300
G30     148.2          44.6                6.9 +/-    0.59       9.3 +/-    0.59  0.140 / 0.260