PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-16:13:20
G02     200.7          19.6               14.7 +/-    2.96      32.8 +/-    2.96  0.040 / 0.040
G06     169.7          54.2               13.1 +/-    0.75      15.8 +/-    0.75  0.040 / 0.040
G13     225.8          13.2               11.9 +/-    3.88      30.8 +/-    3.88  0.060 / 0.080
G17     17.8           61.8                9.2 +/-    0.91      10.3 +/-    0.91  0.060 / 0.080
G19     327.8          71.3                9.2 +/-    0.61       9.7 +/-    0.61  0.200 / 1.060
G24     309.8          29.3                8.8 +/-    0.92      15.7 +/-    0.92  0.190 / 0.830
G28     83.7           44.4                9.3 +/-    1.07      12.6 +/-    1.07  0.030 / 0.040
G30     156.7          13.2               10.6 +/-    1.79      27.5 +/-    1.79  0.040 / 0.040