PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-17:12:50
G01     123.8          13.5               13.2 +/-    1.09      34.0 +/-    1.09  0.140 / 0.610
G07     76.2           64.6               12.5 +/-    0.72      13.7 +/-    0.72  0.140 / 0.640
G08     48.2           36.8                9.2 +/-    1.71      14.2 +/-    1.71  0.070 / 0.120
G09     178.5          34.0               10.5 +/-    3.36      16.9 +/-    3.36  0.060 / 0.100
G11     113.3          37.8               13.8 +/-    1.99      20.8 +/-    1.99  0.050 / 0.090
G13     319.8          15.2               10.8 +/-    2.60      26.8 +/-    2.60  0.060 / 0.090
G17     199.9          17.9                9.9 +/-    1.82      22.9 +/-    1.82  0.050 / 0.040
G18     98.7           18.1               12.6 +/-    2.20      29.0 +/-    2.20  0.030 / 0.040
G28     275.7          51.0               12.7 +/-    1.31      15.8 +/-    1.31  0.120 / 0.220
G30     340.8          65.3                9.9 +/-    0.90      10.8 +/-    0.90  0.090 / 0.280