PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-14:12:50
G02     200.8          15.8               -2.7 +/-    1.13      -6.6 +/-    1.13  0.040 / 0.030
G06     170.3          51.4                8.8 +/-    0.59      10.9 +/-    0.59  0.030 / 0.030
G13     227.8          15.1                8.5 +/-    2.63      21.0 +/-    2.63  0.100 / 0.160
G17     12.1           64.7                6.9 +/-    1.19       7.5 +/-    1.19  0.090 / 0.120
G19     318.7          72.0                6.1 +/-    0.83       6.3 +/-    0.83  0.040 / 0.050
G24     311.8          26.9                5.6 +/-    1.71      10.5 +/-    1.71  0.050 / 0.050
G28     79.6           46.4                7.8 +/-    1.82      10.3 +/-    1.82  0.050 / 0.030
G30     156.8          17.1                6.8 +/-    0.99      16.0 +/-    0.99  0.040 / 0.030