PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-11:27:30
G07     352.7          63.8                5.0 +/-    0.57       5.5 +/-    0.57  0.030 / 0.040
G08     90.9           53.6                4.5 +/-    0.80       5.5 +/-    0.80  0.030 / 0.040
G09     185.5          66.8                5.8 +/-    0.32       6.3 +/-    0.32  0.110 / 0.180
G11     141.0          18.7                4.2 +/-    1.59       9.6 +/-    1.59  0.070 / 0.210
G23     156.1          30.1                4.9 +/-    0.81       8.5 +/-    0.81  0.120 / 0.250
G27     49.5           28.1                2.9 +/-    2.21       5.3 +/-    2.21  0.150 / 0.300
G28     241.0          29.4                5.4 +/-    1.45       9.6 +/-    1.45  0.090 / 0.150
G30     308.5          41.3                4.5 +/-    1.41       6.5 +/-    1.41  0.090 / 0.150