PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-13:58:00
G07     39.6           69.7                9.2 +/-    0.79       9.7 +/-    0.79  0.050 / 0.060
G08     53.8           42.6                8.6 +/-    0.73      11.9 +/-    0.73  0.040 / 0.060
G09     177.5          39.2               11.4 +/-    1.20      16.7 +/-    1.20  0.190 / 0.340
G11     122.2          32.9               10.3 +/-    0.57      16.9 +/-    0.57  0.230 / 0.300
G17     199.7          10.5               -5.4 +/-   19.97     -15.0 +/-   19.97  0.080 / 0.120
G18     107.4          14.6               10.7 +/-    1.13      27.0 +/-    1.13  0.070 / 0.120
G27     37.8           10.5                8.1 +/-    1.56      22.4 +/-    1.56  0.030 / 0.050
G28     270.0          50.6                8.1 +/-    1.01      10.2 +/-    1.01  0.030 / 0.050
G30     327.8          56.7                7.4 +/-    1.16       8.6 +/-    1.16  0.050 / 0.080