PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-21:27:40
G02     202.2          31.9               19.8 +/-    0.93      33.3 +/-    0.93  0.060 / 0.100
G06     167.1          64.1               16.5 +/-    0.76      18.1 +/-    0.76  0.050 / 0.080
G12     304.6          10.7               -5.2 +/-   17.85     -14.3 +/-   17.85  0.070 / 0.100
G17     33.2           51.3               14.9 +/-    1.40      18.5 +/-    1.40  0.080 / 0.100
G19     355.2          66.9               14.5 +/-    0.97      15.7 +/-    0.97  0.120 / 0.240
G24     300.2          37.0               13.0 +/-    1.59      19.8 +/-    1.59  0.040 / 0.030
G28     96.7           37.1               15.6 +/-    1.18      23.9 +/-    1.18  0.030 / 0.040