PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-22:13:00
G01     88.5           31.8                8.9 +/-    0.66      14.9 +/-    0.66  0.050 / 0.050
G07     127.1          39.5               10.9 +/-    0.38      16.0 +/-    0.38  0.040 / 0.060
G11     65.5           38.7                8.5 +/-    1.73      12.7 +/-    1.73  0.130 / 0.100
G13     292.7          37.1                5.4 +/-    1.56       8.3 +/-    1.56  0.100 / 0.140
G15     314.2          10.8               -2.6 +/-   17.41      -7.2 +/-   17.41  0.080 / 0.120
G17     214.2          56.5               10.9 +/-    0.84      12.8 +/-    0.84  0.080 / 0.080
G18     59.7           22.1                7.0 +/-    1.44      14.7 +/-    1.44  0.110 / 0.170
G19     214.6          27.9               11.6 +/-    1.75      21.2 +/-    1.75  0.130 / 0.230
G28     343.0          61.7                8.3 +/-    0.71       9.3 +/-    0.71  0.050 / 0.050
G30     109.0          74.8               11.6 +/-    1.08      11.9 +/-    1.08  0.040 / 0.040