PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-18:13:00
G02     228.1          68.9               10.6 +/-    0.82      11.3 +/-    0.82  0.250 / 0.360
G05     174.1          10.7               -2.0 +/-   25.25      -5.5 +/-   25.25  0.330 / 0.440
G06     43.4           64.8                9.7 +/-    0.73      10.6 +/-    0.73  0.040 / 0.040
G12     320.3          43.9               10.8 +/-    0.61      14.8 +/-    0.61  0.030 / 0.040
G17     63.8           28.3                9.9 +/-    1.72      18.0 +/-    1.72  0.140 / 0.190
G19     51.1           41.5               10.4 +/-    1.27      14.7 +/-    1.27  0.130 / 0.180
G24     252.9          37.9               12.1 +/-    1.18      18.3 +/-    1.18  0.050 / 0.100
G28     127.4          11.2               11.9 +/-    2.34      32.3 +/-    2.34  0.060 / 0.110