PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-22:57:30
G02     199.7          19.2               16.3 +/-    1.06      36.6 +/-    1.06  0.070 / 0.110
G06     175.0          48.4               15.4 +/-    0.78      19.8 +/-    0.78  0.070 / 0.100
G13     227.9          14.8               14.0 +/-    2.12      35.1 +/-    2.12  0.310 / 0.430
G17     21.0           60.7               12.5 +/-    0.73      14.1 +/-    0.73  0.140 / 0.300
G19     314.9          71.5               12.4 +/-    0.81      13.0 +/-    0.81  0.060 / 0.080
G24     310.4          29.2               10.2 +/-    2.02      18.1 +/-    2.02  0.070 / 0.080
G28     82.2           44.3               12.1 +/-    1.69      16.5 +/-    1.69  0.040 / 0.030
G30     156.5          15.6               14.9 +/-    1.54      36.5 +/-    1.54  0.030 / 0.030