PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-12:42:30
G07     329.4          56.6                5.0 +/-    0.54       5.9 +/-    0.54  0.050 / 0.070
G08     102.6          51.2                7.5 +/-    0.60       9.3 +/-    0.60  0.070 / 0.080
G09     190.1          74.9                6.7 +/-    0.40       7.0 +/-    0.40  0.060 / 0.120
G11     146.9          12.0                8.7 +/-    3.68      23.3 +/-    3.68  0.060 / 0.090
G23     154.3          42.5                7.2 +/-    0.66      10.0 +/-    0.66  0.030 / 0.030
G27     57.3           32.9                5.4 +/-    0.95       9.0 +/-    0.95  0.030 / 0.040
G28     235.6          27.7                5.5 +/-    1.79      10.0 +/-    1.79  0.050 / 0.060
G30     299.9          33.1                4.4 +/-    2.13       7.3 +/-    2.13  0.030 / 0.060