PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-14:28:10
G02     216.4          56.1                7.4 +/-    0.84       8.7 +/-    0.84  0.080 / 0.070
G06     58.5           74.0                6.1 +/-    0.53       6.3 +/-    0.53  0.070 / 0.070
G12     317.9          35.4                5.6 +/-    1.59       8.8 +/-    1.59  0.060 / 0.070
G17     54.6           35.0                6.9 +/-    1.36      10.9 +/-    1.36  0.050 / 0.100
G19     40.0           48.1                6.1 +/-    1.26       7.9 +/-    1.26  0.050 / 0.050
G24     267.5          41.2                7.2 +/-    2.07      10.2 +/-    2.07  0.040 / 0.060
G28     120.1          20.3                6.1 +/-    1.01      13.2 +/-    1.01  0.030 / 0.020