PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-15:28:10
G02     219.0          59.9               10.3 +/-    0.58      11.7 +/-    0.58  0.050 / 0.080
G06     52.0           71.4               10.9 +/-    0.61      11.4 +/-    0.61  0.030 / 0.070
G12     318.7          37.8                6.9 +/-    1.24      10.5 +/-    1.24  0.120 / 0.480
G17     56.8           33.6                7.9 +/-    0.65      12.9 +/-    0.65  0.120 / 0.390
G19     43.4           46.1                9.4 +/-    0.58      12.5 +/-    0.58  0.030 / 0.050
G24     263.1          40.5               10.2 +/-    1.03      14.7 +/-    1.03  0.040 / 0.050
G28     122.4          17.7               10.4 +/-    1.35      24.2 +/-    1.35  0.070 / 0.090