PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-14:28:00
G02     204.5          33.3                8.8 +/-    1.11      14.3 +/-    1.11  0.030 / 0.040
G06     154.2          70.8                8.1 +/-    0.76       8.6 +/-    0.76  0.030 / 0.030
G12     307.6          16.0                5.0 +/-    3.83      12.2 +/-    3.83  0.170 / 0.430
G17     33.7           51.0                5.3 +/-    0.52       6.6 +/-    0.52  0.140 / 0.310
G19     7.6            63.7                5.6 +/-    0.53       6.2 +/-    0.53  0.080 / 0.080
G24     296.9          37.9                7.9 +/-    1.31      11.9 +/-    1.31  0.060 / 0.100
G28     100.3          36.0                6.6 +/-    0.51      10.2 +/-    0.51  0.050 / 0.150