PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-17:28:10
G01     75.0           32.8                9.2 +/-    0.85      15.3 +/-    0.85  0.040 / 0.050
G07     134.7          29.4               10.2 +/-    0.98      18.0 +/-    0.98  0.040 / 0.060
G11     55.9           33.4                8.7 +/-    0.64      14.3 +/-    0.64  0.050 / 0.110
G13     278.8          38.7               11.1 +/-    1.12      16.4 +/-    1.12  0.050 / 0.120
G15     305.4          14.7                7.4 +/-    2.16      18.6 +/-    2.16  0.070 / 0.120
G17     225.3          64.4               13.0 +/-    1.05      14.2 +/-    1.05  0.160 / 0.200
G18     51.1           19.3                8.6 +/-    0.74      19.3 +/-    0.74  0.050 / 0.100
G19     220.4          39.0               13.5 +/-    2.03      20.0 +/-    2.03  0.060 / 0.140
G28     1.2            61.3               10.0 +/-    0.35      11.2 +/-    0.35  0.070 / 0.090
G30     131.2          62.4               11.1 +/-    0.73      12.4 +/-    0.73  0.070 / 0.110