PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-22:58:00
G01     61.5           30.8                9.2 +/-    1.35      15.9 +/-    1.35  0.120 / 0.240
G07     140.9          19.1                9.6 +/-    2.77      21.7 +/-    2.77  0.090 / 0.170
G11     48.1           23.9                7.7 +/-    1.67      15.3 +/-    1.67  0.080 / 0.130
G13     263.6          36.4               10.3 +/-    1.72      15.9 +/-    1.72  0.090 / 0.110
G15     294.7          16.5                7.4 +/-    1.25      17.8 +/-    1.25  0.030 / 0.040
G17     255.9          77.2               10.7 +/-    0.37      10.9 +/-    0.37  0.040 / 0.050
G18     41.3           11.7                7.4 +/-    1.52      19.9 +/-    1.52  0.040 / 0.040
G19     230.3          49.0                9.8 +/-    2.69      12.5 +/-    2.69  0.040 / 0.040
G28     26.5           58.9                8.7 +/-    0.84      10.0 +/-    0.84  0.090 / 0.090
G30     142.6          53.4               10.9 +/-    0.61      13.2 +/-    0.61  0.100 / 0.080