PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-14:57:50
G01     44.7           20.9                7.0 +/-    2.77      15.0 +/-    2.77  0.240 / 0.410
G06     175.7          31.1               10.5 +/-    1.25      18.0 +/-    1.25  0.250 / 0.250
G11     43.6           10.5                6.8 +/-    4.01      18.8 +/-    4.01  0.040 / 0.030
G13     243.1          27.5                9.9 +/-    1.51      18.3 +/-    1.51  0.040 / 0.030
G15     277.8          14.4                7.2 +/-    1.52      18.1 +/-    1.52  0.040 / 0.050
G17     326.1          76.8                8.1 +/-    0.45       8.3 +/-    0.45  0.040 / 0.070
G19     258.6          66.0                9.7 +/-    0.61      10.5 +/-    0.61  0.040 / 0.050
G24     318.4          12.4                4.1 +/-    8.11      10.9 +/-    8.11  0.050 / 0.050
G28     53.4           54.5                9.2 +/-    0.66      11.0 +/-    0.66  0.110 / 0.220
G30     152.0          34.4                9.6 +/-    0.75      15.4 +/-    0.75  0.100 / 0.270