PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-15:57:50
G01     91.1           31.6               11.1 +/-    0.45      18.7 +/-    0.45  0.040 / 0.050
G07     124.8          46.4               10.3 +/-    1.55      13.6 +/-    1.55  0.040 / 0.050
G11     69.4           40.0                9.4 +/-    0.39      13.7 +/-    0.39  0.030 / 0.040
G13     295.3          35.8                8.7 +/-    0.91      13.6 +/-    0.91  0.030 / 0.040
G17     214.1          51.9               10.7 +/-    1.44      13.2 +/-    1.44  0.110 / 0.110
G18     64.5           24.0                8.9 +/-    0.92      17.8 +/-    0.92  0.100 / 0.100
G19     214.5          24.0               11.8 +/-    2.21      23.5 +/-    2.21  0.080 / 0.140
G28     347.6          61.8                7.1 +/-    0.54       8.0 +/-    0.54  0.080 / 0.110
G30     100.4          77.0                9.3 +/-    0.81       9.5 +/-    0.81  0.050 / 0.090