PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-18:57:50
G01     75.8           32.9               12.3 +/-    0.55      20.3 +/-    0.55  0.040 / 0.060
G07     134.4          29.0               13.7 +/-    1.66      24.5 +/-    1.66  0.030 / 0.060
G11     56.1           33.4               10.2 +/-    0.80      16.6 +/-    0.80  0.050 / 0.120
G13     279.6          38.7               12.5 +/-    1.08      18.6 +/-    1.08  0.050 / 0.120
G15     305.8          14.6                8.3 +/-    2.41      20.9 +/-    2.41  0.070 / 0.220
G17     224.8          64.9               14.3 +/-    1.01      15.6 +/-    1.01  0.070 / 0.230
G18     51.2           19.3               10.2 +/-    0.89      22.9 +/-    0.89  0.130 / 0.130
G19     220.1          38.2               14.3 +/-    0.94      21.5 +/-    0.94  0.110 / 0.110
G28     1.1            61.3               10.4 +/-    0.46      11.7 +/-    0.46  0.090 / 0.140
G30     130.4          63.8               12.5 +/-    0.80      13.8 +/-    0.80  0.090 / 0.130