PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-20:27:50
G02     336.6          79.1                8.1 +/-    0.51       8.3 +/-    0.51  0.170 / 0.230
G05     164.2          32.7               12.5 +/-    0.83      20.8 +/-    0.83  0.140 / 0.210
G06     40.8           41.6                7.6 +/-    0.73      10.8 +/-    0.73  0.080 / 0.160
G12     314.1          67.9                6.1 +/-    1.01       6.5 +/-    1.01  0.070 / 0.160
G17     84.1           13.3                9.0 +/-    1.70      23.3 +/-    1.70  0.030 / 0.040
G19     74.2           26.7                9.3 +/-    1.70      17.4 +/-    1.70  0.030 / 0.040
G24     229.2          23.3               12.7 +/-    1.76      25.7 +/-    1.76  0.030 / 0.050
G25     317.1          27.2                5.5 +/-    1.68      10.2 +/-    1.68  0.030 / 0.040