PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-16:28:10
G02     206.6          41.2               10.9 +/-    1.05      15.5 +/-    1.05  0.050 / 0.110
G06     137.9          76.5               10.2 +/-    0.86      10.5 +/-    0.86  0.060 / 0.130
G12     310.8          20.4                7.7 +/-    1.50      16.8 +/-    1.50  0.030 / 0.050
G17     40.2           46.1                7.7 +/-    1.01      10.2 +/-    1.01  0.030 / 0.050
G19     18.5           59.4                8.9 +/-    0.67      10.2 +/-    0.67  0.030 / 0.020
G24     288.7          40.6                5.1 +/-    2.44       7.3 +/-    2.44  0.030 / 0.020
G28     107.0          31.2                8.6 +/-    1.01      14.7 +/-    1.01  0.050 / 0.050