PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-15:42:40
G02     201.0          20.1               11.5 +/-    2.80      25.2 +/-    2.80  0.060 / 0.100
G06     169.1          55.2               10.3 +/-    0.97      12.2 +/-    0.97  0.060 / 0.070
G13     225.2          12.7                9.0 +/-    3.81      23.8 +/-    3.81  0.040 / 0.040
G17     18.2           61.5                9.0 +/-    0.44      10.1 +/-    0.44  0.040 / 0.040
G19     330.7          71.1                8.6 +/-    0.86       9.0 +/-    0.86  0.040 / 0.040
G24     309.3          29.8                7.1 +/-    1.18      12.5 +/-    1.18  0.040 / 0.040
G28     84.5           44.1                8.8 +/-    1.16      12.0 +/-    1.16  0.040 / 0.030
G30     156.9          12.8                9.3 +/-    1.29      24.3 +/-    1.29  0.050 / 0.030