PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-20:13:10
G01     42.6           18.5                9.9 +/-    0.82      22.7 +/-    0.82  0.040 / 0.060
G06     176.8          33.5               15.7 +/-    1.63      25.6 +/-    1.63  0.040 / 0.050
G13     239.7          24.8               13.4 +/-    1.68      26.4 +/-    1.68  0.060 / 0.100
G15     273.2          13.4               12.4 +/-    0.99      32.0 +/-    0.99  0.080 / 0.110
G17     353.8          73.3               13.8 +/-    0.77      14.3 +/-    0.77  0.090 / 0.170
G19     267.4          67.7               13.2 +/-    0.56      14.1 +/-    0.56  0.090 / 0.130
G24     317.2          16.9               11.9 +/-    4.26      28.3 +/-    4.26  0.080 / 0.250
G28     61.4           51.9               12.7 +/-    0.52      15.7 +/-    0.52  0.070 / 0.260
G30     152.9          29.0               14.8 +/-    1.54      26.6 +/-    1.54  0.030 / 0.040