PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-17:28:10
G01     124.0          13.4               11.6 +/-    1.46      29.9 +/-    1.46  0.040 / 0.080
G07     76.1           64.5               11.2 +/-    0.39      12.2 +/-    0.39  0.050 / 0.100
G08     48.2           36.8                9.7 +/-    0.81      14.9 +/-    0.81  0.050 / 0.100
G09     178.6          34.2                9.5 +/-    1.18      15.4 +/-    1.18  0.050 / 0.120
G11     113.5          37.7               12.3 +/-    1.09      18.6 +/-    1.09  0.030 / 0.040
G13     319.9          15.0                8.7 +/-    2.40      21.6 +/-    2.40  0.030 / 0.040
G17     199.8          17.9               11.7 +/-    1.37      27.0 +/-    1.37  0.100 / 0.290
G18     98.8           18.0               11.5 +/-    1.85      26.6 +/-    1.85  0.130 / 0.390
G28     275.5          50.9               10.3 +/-    1.28      12.9 +/-    1.28  0.120 / 0.360
G30     340.3          65.0                9.7 +/-    0.63      10.6 +/-    0.63  0.120 / 0.300