PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-19:58:00
G02     332.4          79.5                6.6 +/-    0.40       6.7 +/-    0.40  0.170 / 0.180
G05     164.6          32.1               11.3 +/-    1.51      19.0 +/-    1.51  0.090 / 0.160
G06     40.7           42.0                6.7 +/-    0.94       9.4 +/-    0.94  0.030 / 0.030
G12     314.7          67.4                6.3 +/-    0.50       6.8 +/-    0.50  0.040 / 0.030
G17     83.5           14.0                8.9 +/-    1.58      22.8 +/-    1.58  0.180 / 0.240
G19     73.7           27.0                7.5 +/-    1.53      13.9 +/-    1.53  0.160 / 0.300
G24     229.8          23.8               19.2 +/-    2.55      38.7 +/-    2.55  0.110 / 0.250
G25     317.2          26.6                7.0 +/-    2.30      13.3 +/-    2.30  0.140 / 0.260