PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-13:27:50
G02     202.1          22.4                6.5 +/-    2.16      13.5 +/-    2.16  0.080 / 0.140
G06     166.1          59.8                8.2 +/-    0.55       9.3 +/-    0.55  0.090 / 0.150
G17     23.1           58.5                6.9 +/-    1.11       8.0 +/-    1.11  0.040 / 0.040
G19     343.3          69.6                5.8 +/-    0.73       6.2 +/-    0.73  0.060 / 0.040
G24     306.8          31.9                5.0 +/-    1.75       8.4 +/-    1.75  0.040 / 0.030
G28     88.6           42.6                7.0 +/-    1.25       9.8 +/-    1.25  0.030 / 0.030
G30     157.8          10.8                6.9 +/-    5.59      18.9 +/-    5.59  0.200 / 0.170