PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-20:28:00
G02     336.6          79.1                8.4 +/-    0.30       8.6 +/-    0.30  0.120 / 0.140
G05     164.2          32.7               12.5 +/-    1.45      20.8 +/-    1.45  0.150 / 0.140
G06     40.8           41.6                8.3 +/-    0.65      11.7 +/-    0.65  0.040 / 0.040
G12     314.1          67.9                8.7 +/-    0.46       9.3 +/-    0.46  0.030 / 0.040
G17     84.1           13.3                8.8 +/-    1.89      22.7 +/-    1.89  0.240 / 0.290
G19     74.2           26.7                8.6 +/-    1.29      16.2 +/-    1.29  0.210 / 0.190
G24     229.2          23.3               12.3 +/-    2.68      24.9 +/-    2.68  0.030 / 0.040
G25     317.1          27.2                8.5 +/-    2.73      15.9 +/-    2.73  0.030 / 0.030