PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-16:28:10
G01     45.8           21.9                7.7 +/-    2.87      16.1 +/-    2.87  0.030 / 0.060
G06     176.4          29.2               10.5 +/-    1.57      18.8 +/-    1.57  0.040 / 0.060
G11     43.6           11.3                7.4 +/-    2.62      20.1 +/-    2.62  0.290 / 0.320
G13     244.6          28.3               10.9 +/-    1.65      19.8 +/-    1.65  0.220 / 0.390
G15     278.7          14.8                9.0 +/-    1.47      22.5 +/-    1.47  0.430 / 0.300
G17     325.4          77.3               10.5 +/-    0.35      10.7 +/-    0.35  0.400 / 0.530
G19     255.2          64.8               11.8 +/-    0.94      12.9 +/-    0.94  0.020 / 0.030
G24     318.5          11.5               -3.8 +/-   29.94     -10.1 +/-   29.94  0.030 / 0.030
G28     51.7           54.7               10.4 +/-    1.08      12.5 +/-    1.08  0.050 / 0.040
G30     151.1          34.6               10.8 +/-    1.19      17.3 +/-    1.19  0.040 / 0.040