PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-12:27:50
G07     342.2          61.3                5.3 +/-    0.77       5.9 +/-    0.77  0.130 / 0.330
G08     100.8          52.3                6.2 +/-    0.49       7.6 +/-    0.49  0.170 / 0.300
G09     192.9          73.8                7.8 +/-    0.92       8.0 +/-    0.92  0.220 / 0.580
G11     144.8          14.6                6.5 +/-    3.45      16.4 +/-    3.45  0.180 / 0.730
G23     154.7          37.6                7.3 +/-    0.84      11.0 +/-    0.84  0.040 / 0.040
G27     55.1           31.8                4.7 +/-    1.56       8.0 +/-    1.56  0.040 / 0.040
G28     236.2          24.8                6.4 +/-    2.91      12.5 +/-    2.91  0.080 / 0.090
G30     304.0          37.8                5.0 +/-    1.12       7.5 +/-    1.12  0.120 / 0.100